Around our Galaxy orbits several smaller, so-called satellite galaxies.
The more massive the white dwarf is, the smaller it is.
Three galaxies are known. the inner parts of which rotate in the opposite direction to the outer ones.
The largest known star in the universe is Uy scuti, 1708 times larger than the Sun.
The coldest known place in the space is the Boomerang Nebula with a temperature of -272°C (1 K).
Pluto has up to 5 natural satellites.
Uranus has a larger diameter, but at the same time less weight than Neptune.
Earth´s rotation slows by about 17 milliseconds a century.
Mercury & Venus are the only 2 planets in our solar system that have no moons.
If a star passes too close to a black hole, it can be torn apart.
The hottest planet in our solar system is Venus.
Our solar system is 4,57 billion years old.
Enceladus, one of Saturn´s smaller moons, reflects 90% of the Sun´s light.
The highest mountain discovered is the Olympus Mons, which is located on Mars.
The Whirlpool Galaxy (M51) was the first celestial object identified as being spiral.
A light-year is the distance covered by the light in a single year.
The Milky Way galaxy is 105 700 light-years wide.
There are more stars in space than there are grains of sand in the world.
Pluto´s largest moon, Charon, is half the size of Pluto.
The first ever black hole photographed is 3 million times the size of Earth.
Exoplanets are planets that orbit around other stars.
A sunset on Mars is blue.
Red Dwarf stars that are low in mass can burn continually for up to 10 trillion years.
There are 88 recognized star constellations in our night sky.
The center of a comet is called a “nucleus”.
The Earth weighs about 81 times more than the Moon.
A large percentage of asteroids are pulled in by Jupiter´s gravity.
Pluto is named after the Roman god of the underworld.
A day on Pluto is lasts for 153,6 hours long.
Uranus was originally called “George´s Star”.
The first Supernovae observed outside of our own galaxy was in 1885.
There are three main types of galaxies: elliptical, spiral & irregular.
Stars twinkle because of the way light is disrupted as it passes through Earth´s atmosphere.
The distance between the Sun & Earth is defined as an Astronomical Unit.
Earth is the only planet not named after a God.
The first footprints put on the Moon will probably be there a long, long time – maybe almost as long as the Moon itself lasts.
There is a planet half the radius of the Earth with a surface made up of diamonds.
Neutron stars can rotate up to 500 times in 1 second.
The Sun´s mass takes up 99,86% of the Solar System.
A black hole is created when big stars explode. Its gravitational force is so strong that nothing can escape from it.
The Moon was made when a rock smashed into Earth.
The brightest things in the universe are quasars, which can be 429 trillion times brighter than our Sun.
Sweeps 10 is the planet with the shortest orbital period found. It orbits its star in only 10 hours.
Mars appears red because its surface is covered with iron oxide (rust).
The every furthest galaxies in the universe are speeding away from us at more than 90% of the speed of light.
The known cosmos contains approximately 50 000 000 000 galaxies.
Seasons last 21 years on Uranus while each pole has 42 years of sunlight followed by 42 years of darkness.
This planet look a lot like Earth from a distance, but it´s more like Earth´s evil twin. It´s called HD 189733b, its winds blow at 7 times the speed of sound, and its rain is made of molten glass.
There´s an asteroid that has rings, as Saturn.
Most of the atoms in our bodies were created in stars through fusion.
Just reaching the center of our own galaxy would take longer than we have now existed as beings.
The oldest known star is the red giant HE 1523-0901. At 13,2 billion years old, it is almost as old as the universe itself.
Our Solar System – with the Sun, the planets and their moons, and the billion of asteroids and comets – fills less than a trillionth of our universe.
Pluto is not on the edge of our solar system. The edge of our solar system is past the theorized Oort cloud, which, starting from Pluto, would take 10 000 years to reach. Pluto is barely one-fifty-thousandth of the way to the edge of the solar system.
Cosmic rays are highly energetic particles that flow throughout our solar system from deep in outer space, but astronomers are unsure of their origins.
Dark matter (which is linked to dark energy) is the “glue” that holds the universe together. However, it has not been directly measured, though scientists believe it has a better chance of being detected than dark energy.
Space is so dark because we can see light only when it hits an object and bounces off of it.
Four million tons of hydrogen are consumed by the Sun every second, which helps to create the Sun´s composition of 75 percent hydrogen, 23 percent helium, and 2 percent heavier elements.
White holes are theorized time reversals of black holes. While the event horizon of a black hole attracts matter, the event horizon of a white hole ejects matter, even though the white hole itself still attracts matter. The difference is the action of the event horizon.
Mars has 37,5 % of the gravity that Earth has. This means that a 100-pound person on Earth would weigh only 38 pounds on Mars and could jump three times as high.
The center of the Milky Way is full of mostly old stars. Its spiral arms contain more newborn stars.
There is enough matter in the Orion Nebula to produce over 10 000 stars.
Gamma-ray bursts can release more energy in 10 seconds than our Sun will in its entire life.
There´s a rogue supermassive black hole speeding through space at around five million miles per hour.
There is a planet in our galaxy where the temperature during the day can reach over 1 000 degrees celsius and it possibly rains molten glass horizontally at around 4 500 mph.
In around 4,5 billion years, the Milky Way is expected to collide with the Andromeda galaxy, our closest galactic neighbour, to form a giant elliptical galaxy.
There are rogue planets that have been knocked out of orbit just chilling out in the universe, and they could od the same to another planet.
All of the planets in our solar system can fit in between the Earth and the Moon, with about 2 729 miles to spare.
Scientists think they have found a parallel universe in a void measuring one billion light years across.
Some nebulae have night lights made of new stars.
The center of the Milky Way smells like rum & tasted like raspberries.
Jupiter, is twice as big as all of the other planets in our solar system combined.
Saturn´s rings are made up of bits of ice, dust and rock.
In our solar system that are 4 planets known as gas giants: Jupiter, Saturn, Uranus & Neptune.
Outer space is silent. Eerily silent.
One year on Venus is equal to 224 Earth days. And one day on Venus is equal to 243 Earth days.
Jupiter completes one rotation in less than 10 hours which means that the plant´s surface is moving at a speed of nearly 50 000 km/hr.
According to Loop Quantum Gravity (LQG), at the center of a black hole, you won´t die. Instead, you would be teleported to another universe through a Quantum Portal.
If you touch two pieces of the same type of metal together in the vacuum of space, they will fuse, bound together until eternity (or until you break them apart).
Because the universe cooling as it expands, scientists believe that it will end in a Big Freeze.
There´s a giant cloud of alcohol in Sagittarius B.
If we compress Earth to the size of marble it would by collapse itself and become a black hole.
Moondust is very soft and smells like gunpoweder.
The loudest events in the universe are starquakes.
Quasars emit more energy than thousands of times the entire output of our galaxy.
Our own galaxy, The Milky Way has other smaller galaxies known satellites galaxies that orbit around it.
If you watched an object slip into a black hole, no matter how long you watched, you would never actually see the object enter it due to time dilation.
A region near a black hole is called a photon sphere where the gravitational pull is so strong that light photons orbit it, meaning if you were at that point and turned to the side, you could see the back of your own head.
These interstellar objects that are smaller than galaxies have been named dwarf galaxies that have several billion stars and there are even smaller objects called hobbit galaxies.
It takes the Earth (and the Sun) 226 million years to orbit around the Milky Way Galaxy. Which means Earth has made the orbit around our galaxy about 20 times since the planet is 4,5 billion years old.
Most “shooting stars” (meteoroids) that hit the earth every day are the size of a pebble.
A neutron star is so dense that if and object was dropped from one meter above the star´s surface, it would hit the surface at a speed of 7,2 million km per hour.
The Pillars of Creation, a nebula 7 000 light years away, was destroyed by supernova 6 000 years ago. In a thousand years, we will see it destroyed as it takes 7 000 years for the light to reach Earth.
Scientists have named a galaxy, “Death Star Galaxy” because it is shooting an energetic blast of energy from its supermassive black hole at its companion galaxy and thereby destroying it.
The SN 1006 supernova was the brightest star event in recorded human history. It was widely seen on Earth beginning in the year 1006. Some historical sources state that it was bright enough ti cast shadows.
In 1054 a supernova in the Constellation Taurus was observed that was bright enough to remain visible during daylight for perhaps as long as 23 days. The remnant of the supernova, which consists of debris ejected during the explosion, is now known as the Crab Nebula.
Supernovae explode on an average once every 100 years in a galaxy. Assuming there are 170 billion galaxies in the universe, there are 53 supernovae exploding every single second.
There are about 24 galaxies in the observable universe for every single person alive on Earth (170 billion galaxies/7 billion humans).
Our solar system is “unusual” in that it only has one star, more than half of the stars in the sky are binary or triple.
Saturn´s moon Titan has plenty of evidence of organic (life) chemicals in its atmosphere.
Giant stars have burned all their hydrogen, and so burn helium, fusing helium atoms to make carbon.
The Shoemaker-Levy 9 comet smashed into Jupiter in July 1994, with the biggest crash ever witnessed.
The Sun weighs 2 000 trillion trillion tones – about 300 000 times as much as the Earth – even though it is made almost entirely of hydrogen and helium, the lightest gases in the universe.
Jupiter´s moon Europa may have oceans of water beneath its dry surface and it is a major target in the search for life in the Solar System.
Pulsars probably result from a supernova explosion – that is why most are found in the flat disc of the Milky Way, where supernovae occur.
The brightest quasar is 3C 273, 2 billion light years away.
Neptune´s moon Triton is the coldest place in the Solar System, with surface temperatures of -236°C.
The Sun has sunspots, the dark spots on the Sun´s photosphere (surface), 2 000°C cooler than the rest of the surface.
Neptune´s atmosphere rotates in the opposite direction to its core.
A brown dwarf is an object that is considered a transition between a planet and a star.
There can never be a total solar eclipse on Mars.
The stars also have their own atmosphere, composed several layers.
The dwarf planet Ceres is home to the largest ice volcano in the Solar System.
The first extrasolar planet, discovered, circulates around the pulsar.
The densest planet in the Solar System is Earth.
Saturn´s three moons circling in one orbit.
The planet Jupiter has a chemical composition similar to the Sun and other stars.
Every second, 10 billiards of big bang photons hit the human body.
When light waves from distant galaxies are stretched out his was, they look redder. This is called red shift.
Planets have magnetic field around them because of the liquid iron in their cores. As the planets rotate, so the iron swirls, generating electric currents that create the magnetic field.
Jupiter has a huge perpetual storm that rages in its upper layers, known as the Great Red Spot.
The dwarf planet Sedna is the reddest entity in the Solar System right after Mars.
The Drake Equation was proposed by astronomer Frank Drake to work out how many civilizations there could be in our galaxy – and the figure is in millions.
Over billions of years, the orbit of the Mercury can flatten so that it crosses the orbit of Venus.
A double star formed by a plasma star and a neutron star emits X-rays.
The sky on Saturn is blue despite being covered by a light yellow layer of clouds.
Ganymede, the moon of the planet Jupiter, is bigger than the planet Mercury.
The largest galaxy in the observable universe is an elliptical galaxy, IC 1101. It has 100 trillion stars and is 6 million light years across. By comparison, the Milky Way has a mere 100 billion stars and is 120 000 light years across.
Graham´s number is a number so large that the observable universe is far too small to contain an ordinary digital representation of Graham´s number, assuming that each digit occupies one Planck volume (smallest meaningful measurement).
The Oh-My-God particle was an ultra-high-energy cosmic ray that was detected on 15 October 1991 by the University of Utah. It was travelling so absurdly fast that time dilation dictates that it would have experienced only 16 days of time since the beginning of the universe.
A “Googolplex” is such a large number, that if you were to write a “1”, followed by a “0” on every single hydrogen particle in the known universe, you would not even get close to writing out the full number.
Mira, a dying star zipping through our universe is shedding its matter, each bit of which may one day grow into a new, individual star of its own. NASA has called it “The Johnny Appleseed of The Universe.
Uranium-238 has a half-life of 4,468 billion years or about 1/3 the estimated age of the universe.
A dwarf galaxy named Segue 2 is the least massive galaxy in the known Universe, located 114 000 light-years away. The galaxy consists of just 1 000 or so stars with a bit of dark matter holding them together.
A star discovered 75 light-years away is no warmer than a freshly brewed cup of coffee.
It is theorized that there may hypothetical objects that behave just the opposite of a black hole called a white hole. They cannot be entered from the outside, but matter and light can escape.
In 1977, we received a signal from deep space that lasted 72 seconds. We still don´t know how or where it came from.
According to the string theory, black holes have the potential to be shaped like rings, helices, or even like the planet Saturn, but no one actually knows their true shape.
The Milky Way, Andromeda, and all the nearby galaxies are being pulled into something that we can´t see that is tens of thousands of times more massive than our galaxy, called The Great Attractor.
Astronomers have found a massive water vapor cloud which holds 140 trillion times the mass of water in the Earth´s oceans somewhere around 10 billion light years away. It is the largest discovery of water ever found.
Some multiple stars have planets, and they orbit some of the stars while being well away from others.
In the Solar System, iron is more abundant than any other element heavier than silicon, and is about as abundant as silicon itself. This from some iron nuclides being the most tightly bound of any nuclide.
Hydrogen, helium, lithium, and beryllium were made in the early universe. All the others were made in the cores of stars and then spewed out.
Some planets orbit pairs of close stars, thus making them “Tatooine planets”.
Dark energy has made our universe´s expansion start to accelerate again after decelerating.
The Milky Way galaxy alone is thought to harbor some 100 million stellar-mass black holes, plus supermassive Sagittarius A* at its heart.
The are behind Neptune is called the Kuiper belt. It is a disc shaped region of comets, asteroids and dwarf planets, including Pluto. There are estimated thousands of bodies larger than 100 km and trillions of comets. Even the big bodies are not typical asteroids, but frozen liquids and gasses sucha as methane, ammonia and water.
There´s a 30 000 kilometer hexagonal cloud at Saturn´s north pole.
Venus is the most extreme, dangerous planet in the Solar System.
In the darkest parts of space, temperatures can reach -270 degrees Celsius. But if you´re orbiting near Earth in the sunlight, temperature reaches 121 degrees Celsius. Astronauts’ spacesuits are white to reflect he heat they encounter while floating above the Earth.
More energy from the sun hits Earth every hour than the planet uses in a year.
The Saturn has seven distinct rings. It is unknown why these are so prominent, but it is believed that it has something to do with the large number of moons that orbit Saturn. The rings have a radius of about 250 000 km.
The Voyager 1 spacecraft is the most distant human-made object from Earth.
Pluto is not the only dwarf planet in our system. Besides Pluto there are four other dwarf planets in our system: Ceres, Haumea, Makemake and Eris.
It takes 230 million years for our sun to complete cycle of orbit around its massive black hole located at the centre of our galaxy.
Gliese 436 B is a planet located 33 light years from Earth orbiting a red dwarf star Gliese 436. The interesting thing is that even after having a very high surface temperature about 526°C it have water in the form of ice.
There would be no Sun after 4,5 billions years. Our sun will ultimately stop fusion and will become a white dwarf star and cool down and will get lost in the vastness of space.
Research by Yale University scientists suggests that a rocky planet called 55 Cancri which has a radius twice Earth´s and a mass eight times greater may have a surface made up of graphite and diamond.
The universe is made up of mostly things that cannot be seen. In fact, the stars, planets and galaxies that can be detected make up only 4 percent of the universe, according to astronomers. The other 96 percent is made up of substances that cannot be seen or easily comprehended.
100 billion neutrinos are passing through your thumbnail every second. 8,5 minutes ago they were in the heart of the Sun.
Comets are leftovers from the creation of our solar system about 4,5 billion years ago – they consist of dust, ice and carbon dioxide.
On Saturn´s moon Titan, the gravity is low enough and the atmosphere thick enough, that by attaching small wings to your arms, you could fly like a bird.
Astronauts can see cosmic lighting when they close their eyes in space.
If you unravelled all of the DNA in your body, it would span 34 billion miles, reaching to Pluto (2,66 billion miles away) and back … six times.
When a television is not tuned to a station you can see the black and white fuzz and clacking white noise, around 1% of this interference is made up cosmic background radiation – the afterglow of creation.
The universe began with the Big Bang, and is estimated to be approximately 13.7 billion years old (plus or minus 130 million years).
It has benn discovered 82 moons of Saturn so far.
The core of Mercury makes up 80% of the planet.
There are anywhere between 200-400 billion stars in the Milky Way and an estimated 100 billion planets. Around one in five stars are like our sun, and astronomers have estimated that about 22% of them have planets the size of Earth in their habitable zone, where water can exist as a liquid. This means there could be 8.8 billion planets within the galaxy capable of supporting life (not accounting for composition of the planet or its atmosphere).
Voyager 1 also discovered winds that blow at more than 500 m/sec (1,100 mph) through Saturn’s atmosphere in an easterly direction.
The strongest metal of this universe are found inside of neutron star and it’s called “neutron pasta”, it is 10 billion times stronger than steel.
Milky way galaxy is 679943238338.4635x bigger than the sun.
Virgo supercluster (our milky way belongs to it) is about 1100x times bigger than our milky way galaxy.
Astronauts on the International Space Station witness around 15 sunrises and 15 sunsets every day.
The only moon to have its own atmosphere is TITAN, one of Saturn’s moon. Also, the second biggest moon in our solar system. Biggest moon is GANYMEDE, Jupiter’s moon. Ganymede hats it’s own magnetic field, the only moon to have one.
The distance to Galactic Centre is measured as 27000 light years.
Neutron stars are the fastest rotating massive bodies in our universe. They rotational speeds are mind blowing . The fastest rotating pulsar is located in the constellation Sagittarius named as psr j1748 244ad. At its equater it is spinning at about 25% of speed of light completing 700 rotation about its own axis .
Space suit has a mass of 47 pounds (21 kg) without a life support backpack, and costs only a fraction of the standard US$12,000,000 cost for a flight-rated NASA space suit.
The earliest recorded comet is the HALLEY COMET, which was first observed in ancient china in 240 B. C. It makes one orbit around the Sun every 75 years.
When a massive star explodes, its scrunched up core forms something called a neutron star.
Gluons are responsible for most of the mass ofatter around us as 99% of mass of an atom comes from interaction of quarks of proton ane neutron with the gluons.
The closet black hole, Cygnus X – 1, is 8,000 light years away.
On 19th November 2017, scientists discovered a cigar-shaped asteroid coming from out of the solar system. It passed by Earth at a speed of 26.33 km/s (94,800 km/h) and leaving the solar system in 35 days.
In 5 billion years Sun will expand and engulf the entire orbit of Mercury , Venus and Earth . Earth will be a charred ember, descending down into cosmic crucibles , that is the sun’s core, as we vaporize to our death.
Quasars are comparitively small but emit light equivalent to 3–4 galaxies combined.
On 14 September 2015, gravitational waves were detected on Earth for the first time. These ripples in the fabric of space-time – predicted by Einstein in 1916 – came from the merger of two black holes in a distant galaxy.
Light from some stars takes so long to travel to our eyes that when you look at the star-speckled night sky you’re actually peering deep into the past.
TYC 8998-760-1, however, is like our sun. It resembles a very  young version of our own sun.
One of Saturn’s moons has a distinct two-tone coloration.
The human brain is the most complex object in the known Universe.
Uranus’s moon Miranda is the weirdest moon of all. It seems to have been blasted apart, and then put together again.
The Earth is tiny in comparison with the rest of the universe – it could fit into the sun 1.3 million times.
The Sun makes a full rotation once every 25 – 35 days.
In 2006, Pluto was reclassified as a dwarf planet after 76 years classified as the outermost plant in our solar system since its discovery in 1930.
The shape of the universe is infuenced by the struggle between the pull of gravity (based on the density of the matter in the universe) and the rate of expansion.
There are super-compact planetary systems in which all planets orbit closer to their parent star than Mercury, the innermost planet of the Solar System, does to the Sun.
In the Milky Way alone there are estimated to be 500 million potential Goldilocks planets (planets which fall into a star’s habitable zone), so if life can exist in places other than Earth there is a huge number of potential planets on which it might thrive.
There is no such thing as the Universe´s center.
The Martian day is 24 hours 39 minutes and 35 seconds long.
If the Earth had rings like Saturn, they would be positioned along the equator.
Jupiter´s clouds are made of ammonia and ammonium hydrosulfide.
Halleys Comet won’t orbit past Earth again until 2061.
One of Saturn´s moons is walnut-shaped because it´s absorbed some of Saturn´s rings.
The Moon is shaped like a lemon, with flattened poles and bulges on both the near and far side around its equator. This strange shape is thought to have been created during interactions with Earth soon after its formation.
Uranus is tilted on its side.
If Jupiter´s magnetic field were visible to the naked eye, it would appear about four times as wide as the full Moon.
The entire atmosphere of Venus circulates around quickly, with winds reaching speeds of up to 85 m/s (300 km/h; 186.4 mph) at the cloud tops, which circle the planet every four to five Earth days.
Neptune radiates more heat than it gets from the sun.
Most comets are spotted with a sun-gazing telescope.
If your spacesuit started leaking, you could survive for a couple of minutes.
Pluto’s observed atmosphere broke all the predictions. Scientists saw the haze extending as high as 1,000 miles (1,600 km), rising higher above the surface than the atmosphere on Earth.
Scientists found about 20 layers in Pluto’s atmosphere that are both cooler and more compact than expected. This affects calculations for how quickly Pluto loses its nitrogen-rich atmosphere to space.
As regions of space are whizzing away from one another at an ever-increasing rate, the first population of stars to form in the Universe are now too far away for us to ever hope of spying them.
Jupiter’s moon Io has towering volcanic eruptions.
Not all planets form and stay around stars: astronomers estimate that there could be more than 200 billion of them floating free and drifting through our Galaxy.
Over half of the Sun-like stars in the Milky Way are part of multiple star systems, binaries or triplets, with stars orbiting around a common centre of mass.
Saturn’s northern hemisphere has a raging six-sided storm nicknamed “the hexagon.” Why exactly it’s that shape is a mystery. But what is known is that this hexagon, which shares several features in common with hurricanes, has been there for at least decades ― if not hundreds of years.
Sound waves generate heat when they travel and are absorbed by materials.
The sun doesn’t change color during sunset. We only see it that way because the sun’s wavelengths react with the difference in the atmosphere.
If Betelgeuse exploded into a supernova, it would light our sky for 2 months straight.
Wind can cast shadows, they´re just not visible to the naked eye and need to be processed via machine.
If you put Saturn in the water, it would swim.
The Eiffel Tower is a few centimetres taller in summer than winter.
The universe is not completely a vacuum. On average, there are 0.3 atoms per cubic meter.
Only 5 % of the universe is composed of matter. 27% is dark matter and 68 % is hidden energy.
Neutron stars are so dense that a teaspoon weighs more than all people on Earth.
The sun is 400 times bigger that the moon but also 400 times further, so they look similar in the sky.
You can yell at your soup to warm it. However, sound waves carry minimal energy, so the effect would not be noticeable.
Saturn´s moon Titan has liquid oceans of natural gas.
The full moon is 9 times brighter than a crescent moon.
Every year, the Moon moves 3,8 centimeters away from the Earth.
There are “wandering planets” that just roam the universe. They are not tied to any star.
The nearest black hole is 1 500 light-years form Earth.
The largest structure discovered in the universe sis the so-called Ursa Major Supercluster. A large cluster of galaxies with the size of 200,000,000 light-years.
Every 4 months, a new star is born in our galaxy.
Even if you were to approach the speed of light (300,000 km/s; 186,000 miles/s), it would still take you 100,000 years to cross the entire Milky Way.
Water can work against gravity, moving up narrow tubes in a process called capillary action.
There are 79 known moons of Jupiter.
A day on the planet Mercury is twice as long as its year.
It takes 165 years for Neptune to orbit the Sun. It only recently completed the first circulation since its discovery in 1846.
Mercury has extreme temperature fluctuations. From 430°C during the day to -140°C during the night.
Astronauts can return from space up to 2 cm higher – due to absence of gravity.
Neutron stars are the fastest spinning objects in the universe.
In each of us are atoms that were once part of the stars and exploded billions of years ago.
There are approximately 10^22 to 10^24 stars in the observable universe.
The faster an object move in space, the slower time passes for it.
Large Magellanic Cloud is the second or the third-closest galaxy to the Milky Way, after the Sagittarius Dwarf Spheroidal and the possible dwarf irregular galaxy known as the Canis Major Overdensity.
In the next 1 second 300
In the next 1 second 3,000 stars will be formed and 30 stars will explode.
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