Unlike Earth, space has no atmosphere, so sound cannot travel through it.
The Sun is so massive that it accounts for nearly all the mass in our solar system.
Venus rotates so slowly that a single day lasts longer than a full orbit around the Sun.
A sugar-cube-sized amount of neutron star material would weigh about a billion tons.
A giant water vapor cloud was discovered 12 billion light-years away.
Scientists believe the Moon was formed after a Mars-sized object collided with Earth.
Jupiter has no solid surface and is mostly gas with crushing pressure and extreme storms.
Space begins at the Kármán line, just 100 km (62 miles) above sea level.
Venus, not Mercury, is the hottest planet due to its thick atmosphere trapping heat.
Mercury spins very slowly, causing long days and freezing nights.
Saturn is so light that it would float in a giant bathtub of water.
Olympus Mons is nearly three times the height of Mount Everest.
Every century, Earth's rotation slows by about 1.7 milliseconds.
Our galaxy will collide with the Andromeda galaxy in about 4.5 billion years.
Due to intense gravity, time near a black hole moves slower compared to Earth.
A NASA spacesuit is a highly complex life-support system designed for survival in space.
Twinkling is caused by Earth’s atmosphere; in space, stars shine steadily.
It’s estimated that there are more stars in the universe than all the sand on Earth.
The Sun is so large that it could contain around 1 million Earth-sized planets.
Each year, the Moon moves about 3.8 cm further away from Earth.
On Neptune and Uranus, extreme pressure turns carbon into diamond rain.
Even at the speed of light, sunlight needs about 8 minutes and 20 seconds to reach us.
Studies show that astronauts experience changes in gene expression during space missions.
The Boomerang Nebula is colder than deep space, reaching -457°F (-272°C).
Galaxies are moving away from each other as the universe continues to expand.
Dark galaxies are mostly gas and dust, lacking enough stars to shine visibly.
The solar wind pushes the tail of a comet away, regardless of its direction.
It’s filled with cosmic dust, radiation, and tiny particles called plasma.
Scientists found a massive cloud of alcohol near the center of our galaxy.
Without gravity, gas and liquid stay mixed in your stomach—so no burping possible!