facts.txt

The Milky Way galaxy is about 100,000 light-years across
Every galaxy has a supermassive black hole at its center
The universe is thought to be around 13.7 billion years old
The universe is expanding, increasing by 0.007% in one million years
The Milky Way galaxy has an estimated 100 billion stars
Only 5% of the universe is visible from Earth
68% of the universe is dark energy, and 27% is dark matter
A light-year refers to the distance light can cover in a year
Over a million Earths could fit inside the sun
The universe is constantly expanding
The Milky Way galaxy is about 100,000 light-years across
Every galaxy has a supermassive black hole at its center
The universe is thought to be around 13.7 billion years old
The Milky Way galaxy has an estimated 100 billion stars
A light-year refers to the distance light can cover in a year
Over a million Earths could fit inside the sun
The universe is thought to be around 13.7 billion years old.
The universe is expanding, increasing by 0.007% in one million years.
The universe makes a noise like a low humming sound.
The Milky Way galaxy has an estimated 100 billion stars.
68% of the universe is dark energy, and 27% is dark matter.
Every galaxy has a supermassive black hole at its center.
The universe is thought to be around 13.7 billion years old.
The universe is expanding, increasing by 0.007% in one million years.
The universe makes a noise like a low humming sound.
The Milky Way galaxy has an estimated 100 billion stars.
68% of the universe is dark energy, and 27% is dark matter.
Every galaxy has a supermassive black hole at its center.
Our galaxy probably contains 100 to 400 billion stars and is about 100,000 light-years across
The Moon likely came from Earth.
There is a supermassive black hole at the center of our galaxy.
The largest known star is called UY Scuti.
Time travel is possible, but not the way most people would like.
We still don’t really know what’s out there.
The Earth is really, really tiny.
The Sun is really, really tiny.
There is a supermassive black hole at the heart of every galaxy
The Universe has the same temperature everywhere
95% of the Universe is invisible
Most of the stuff in the Universe has repulsive gravity
The Sun is producing only a third of the neutrinos expected
We appear to be alone
There are more than 200 moons in our solar system.
There are approximately 100,000,000,000,000,000,000,000 stars in the Universe. 
Venus is the hottest planet.
The sun contains over 99% of the mass in our solar system.
We always see the same side of the moon.
Scientists detected a radio signal in space from 5 billion light-years away.
Jupiter has the most moons.
It snows metal and rains acid on Venus.
There’s no wind on the moon.
The moon moves 4 cm away from Earth every year.
Mercury has no atmosphere.
The Earth weighs 81 times more than the moon.
Halley’s Comet won’t be seen again until 2061.
The moon was once part of the earth.
Neutron stars can spin 600 times per second.
No one knows how many stars are in space.
Sound actually travels in space.
There could be life on Mars.
One moon orbits Neptune backwards.
A person who weighs 220 lbs on Earth would weigh 84 lbs on Mars.
One day on Venus takes 243 Earth days.
A day on Mars is 24 hours, 39 minutes, and 35 seconds long.
The sun takes over 1 Earth month to make a full rotation.
Your face would puff up in space.
You can’t use a normal pen in space.
There are 88 recognized constellations.
There are estimated to be billions of other galaxies.
There are more stars in the universe than grains of sand on Earth.
Mars has extreme temperatures.
About once a year, an asteroid the size of a car enters Earth’s atmosphere.
Pluto could theoretically sustain life.
3 to 7 different galaxies are visible from Earth.
It rains diamonds on Jupiter and Saturn.
You could expand twice your size when exposed to outer space.
The first black hole photographed is 3 million times the size of Earth.
There are likely millions of black holes in our galaxy.
If you fell into a black hole, you would never escape
If you fell into a stellar-size black hole, you could turn into human spaghetti
A black hole could fit in your pocket
Black holes will spaghettify you and everything else.
Black holes could spawn new universes.
Black holes literally pull the space around them.
Black holes are the ultimate energy factories.
There is a supermassive black hole at the centre of our galaxy.
Black holes slow down time.
Black holes evaporate over time.
Anything can become a black hole, in theory.
Dying Stars Lead to Stellar Black Holes.
You Can’t Directly See a Black Hole.
The observable universe is estimated to be about 93 billion light-years in diameter.
The universe is expanding, causing galaxies to move away from each other.
Dark matter makes up about 27% of the universe, and dark energy constitutes approximately 68%.
The concept of time dilation means that time passes more slowly in strong gravitational fields or at high speeds.
The largest known structure in the universe is the Sloan Great Wall, a vast cosmic structure stretching over a billion light-years.
There are more stars in the universe than there are grains of sand on all the beaches on Earth.
The majority of the universe is composed of hydrogen (75%) and helium (25%).
The closest galaxy to the Milky Way is the Andromeda Galaxy, and it's on a collision course with our galaxy in about 4 billion years.
The temperature in the vast emptiness of space is just above absolute zero, around -270.45 degrees Celsius (-454.81 degrees Fahrenheit).
Stars are formed from clouds of gas and dust in space, primarily hydrogen and helium.
The Sun is classified as a G-type main-sequence star, or G dwarf star.
A light-year is the distance light travels in one year, approximately 5.88 trillion miles (9.46 trillion kilometers).
The Sun's energy comes from nuclear fusion reactions in its core, converting hydrogen into helium.
Red dwarf stars, the most common type in the universe, can burn for trillions of years.
The Crab Nebula, a remnant of a supernova explosion, emits radiation across the entire electromagnetic spectrum.
The largest known star is UY Scuti, with a diameter over 1,700 times that of the Sun.
Black holes are regions of space with gravitational forces so strong that nothing, not even light, can escape them.
Stellar-mass black holes are formed from the collapse of massive stars.
Supermassive black holes, found at the centers of most galaxies, can have masses millions or billions of times that of the Sun.
The event horizon is the boundary around a black hole beyond which nothing can return.
Black holes can "eat" nearby stars, tearing them apart through a process called tidal disruption.
The Voyager 1 spacecraft, launched in 1977, is the farthest human-made object from Earth.
There are more potential iterations of a game of chess than there are atoms in the observable universe.
Neutron stars are incredibly dense, with a teaspoon of neutron star material weighing about 6 billion tons on Earth.
A day on Venus is longer than a year on Venus because it takes the planet about 243 Earth days to complete one rotation.
Quasars are incredibly energetic and distant objects powered by supermassive black holes.
The cosmic microwave background radiation is the afterglow of the Big Bang, still observable today.
Magnetars are neutron stars with extremely powerful magnetic fields, trillions of times stronger than Earth's.
Pulsars are rotating neutron stars that emit beams of electromagnetic radiation, resembling lighthouse beams.
The Great Attractor is a gravitational anomaly affecting the motion of galaxies in our local part of the universe.
Galactic cannibalism occurs when one galaxy absorbs another, incorporating its stars.
There are more planets than stars in our galaxy, and potentially billions of them may support life.
The first confirmed exoplanet was discovered orbiting a pulsar in 1992.
The TRAPPIST-1 system has seven Earth-sized planets, three of which are in the habitable zone.
The Apollo 11 mission in 1969 was the first successful manned mission to land on the Moon.
The International Space Station (ISS) orbits the Earth at an average altitude of about 420 kilometers (261 miles).
The Voyager Golden Record carries sounds and images representing Earth and humanity, intended for any extraterrestrial life that might find it.
Gamma-ray bursts are the most energetic events in the universe, often associated with the death of massive stars.
Cosmic inflation is the theory explaining the rapid expansion of the universe in the first moments after the Big Bang.
Gravitational waves, ripples in spacetime, were first directly detected in 2015.
Extremophiles are organisms that thrive in extreme conditions on Earth, leading scientists to consider the possibility of life on other planets.
The Drake Equation is a formula used to estimate the number of active, communicative extraterrestrial civilizations in our Milky Way galaxy.
Dark energy was discovered by observing distant supernovae, revealing the accelerated expansion of the universe.
The Hubble Space Telescope has provided breathtaking images and crucial data, contributing significantly to our understanding of the cosmos.
Jupiter's moon Europa has a subsurface ocean beneath its icy crust, making it a potential location for extraterrestrial life.
Saturn's moon Titan has lakes and rivers of liquid methane and ethane, creating a unique environment in our solar system.
The Laniakea Supercluster is a massive galaxy supercluster that includes the Milky Way and many other galaxies.
The observable universe contains an estimated 2 trillion galaxies.
White holes are theoretical objects, considered the opposite of black holes, where matter and light would escape but nothing could enter.
Quark stars are hypothetical objects composed of quarks, even denser than neutron stars.
Wormholes are hypothetical tunnels in spacetime that could create shortcuts for long journeys across the universe.
Magnetospheric eternally collapsing objects (MECOs) are hypothetical astronomical objects that could explain some dark matter observations.
Radio astronomy allows astronomers to study celestial objects using radio waves, revealing insights not observable with visible light telescopes.
Interferometry combines signals from multiple telescopes to achieve higher resolution and clearer images.
The missing baryon problem refers to the discrepancy between observed and predicted baryonic matter in the universe.
String theory is a theoretical framework that posits that the fundamental building blocks of the universe are not particles but tiny, vibrating strings.
Every atom in your body was forged in the heart of a star, emphasizing our cosmic connection and the unity of the universe.
The observable universe spans 93 billion light-years in diameter.
It contains an estimated 2 trillion galaxies.
Each galaxy can have billions of stars.
The universe is expanding at an accelerating rate.
Light from distant galaxies takes billions of years to reach us.
We see them as they were in the distant past.
The cosmic microwave background radiation is a snapshot of the early universe.
It shows the universe was once much hotter and denser.
Dark matter makes up about 27% of the universe's mass-energy content.
Dark energy, about 68%, drives the universe's expansion.
Only about 5% of the universe is made up of ordinary matter.
Black holes are some of the most mysterious objects in the universe.
They can have masses millions or even billions of times that of our sun.
Some black holes are so massive they can bend light around them.
Neutron stars are incredibly dense remnants of massive stars.
A teaspoon of neutron star material would weigh billions of tons on Earth.
Supernovae are explosions that can outshine entire galaxies for a brief period.
They create heavy elements like gold, silver, and uranium.
The largest known star, UY Scuti, is over 1,700 times larger than our sun.
The Pillars of Creation in the Eagle Nebula are vast columns of gas and dust.
They are regions where new stars are being born.
Quasars are some of the brightest objects in the universe.
They are powered by supermassive black holes at their centers.
The Great Attractor is a mysterious gravitational anomaly pulling galaxies towards it.
The Boötes Void is one of the largest known cosmic voids, nearly devoid of galaxies.
The Hercules-Corona Borealis Great Wall is one of the largest structures in the universe.
It is a vast supercluster of galaxies stretching over 10 billion light-years across.
The cosmic web is a network of filaments connecting galaxies across the universe.
Some galaxies are cannibalistic, consuming smaller galaxies around them.
The Andromeda Galaxy is on a collision course with our Milky Way galaxy in about 4 billion years.
Gamma-ray bursts are some of the most energetic events in the universe.
They can release more energy in seconds than our sun will in its entire lifetime.
White dwarfs are remnants of low to medium mass stars like our sun.
They will eventually cool down and fade away as black dwarfs over trillions of years.
Red giants are massive stars in their final stages before becoming white dwarfs or supernovae.
The Hubble Space Telescope has revolutionized our understanding of the cosmos.
It has captured stunning images of distant galaxies and nebulae.
Gravitational lensing can magnify and distort light from distant objects due to gravity's effect on spacetime.
The Bullet Cluster provides evidence for dark matter's existence through gravitational lensing observations.
Cosmic inflation theory suggests that the universe underwent rapid expansion shortly after the Big Bang.
Multiverse theories propose the existence of parallel universes beyond our observable one.
String theory posits that fundamental particles are actually tiny strings vibrating at different frequencies.
Quantum entanglement allows particles to be connected regardless of distance instantaneously.
The universe is home to countless exoplanets.
Some exoplanets orbit multiple stars.
Rogue planets drift through space without a star.
The universe is filled with cosmic voids.
Some voids are hundreds of millions of light-years wide.
The universe's age is about 13.8 billion years.
The first stars formed about 100 million years after the Big Bang.
Supermassive black holes reside in the centers of galaxies.
Some black holes spin at nearly the speed of light.
Time dilation near black holes can warp perception of time.
Wormholes are theoretical shortcuts through spacetime.
The observable universe may be just a tiny part of a larger cosmos.
Quantum fluctuations in empty space can create particles.
The universe's expansion may continue indefinitely.
The cosmic web structure connects galaxies across vast distances.
Galaxies collide and merge over billions of years.
Some galaxies have supermassive black holes at their cores.
Gravitational waves are ripples in spacetime caused by massive events.
Neutrinos are nearly massless particles that rarely interact with matter.
The cosmic microwave background radiation is nearly uniform in all directions.
Inflation theory explains the universe's smoothness and flatness.
The observable universe contains an estimated 10^80 atoms.
Quantum mechanics governs the behavior of particles on small scales.
Entropy tends to increase over time in isolated systems.
Quantum superposition allows particles to exist in multiple states simultaneously.