Jeff Bezos has a vision to colonize space with a trillion people. We asked experts to put it to the test.
Jeff Bezos dreams of a future where a trillion humans live in the solar system. But experts are skeptical.
Solar System
A rogue star could save Earth from extinction in a billion years by knocking it out past Pluto
In around a billion years, the sun will become hot enough to boil all the oceans on Earth. A rogue star has a small chance of rescuing life on our planet, a study found.
It should take another 300 years for NASA's Voyager 1 probe to reach the most distant region of our solar system. Until then, it's cruising through the void between the stars.
Voyager 1 crossed the heliopause in 2012 and is drifting through interstellar space at the edge of our Milky Way galaxy, which has a lot of nothing.
5 planets will align this week. Here's when, where, and how to see the alignment of Saturn, Neptune, Jupiter, Uranus, and Mercury.
The rare planetary parade of Saturn, Neptune, Jupiter, Uranus, and Mercury will appear in a line beside the sun.
A 'fake moon' has been following Earth around the sun since 100 BC, and astronomers just noticed
Asteroid 2023 FW13 appears to be orbiting Earth at first glance, but it turns out that's just a coincidence. It's been trailing us around the sun.
Creepy close-up images of the sun reveal yarn-like strands, dark pores, and a 'light bridge' crossing a decaying sunspot
The sun looks spooky and incomprehensible in new up-close images from the world's most powerful solar observatory.
25 photos of space that could change the way you see our universe and make you feel very small
NASA telescopes and probes image planets' secret rings, black holes, cosmic dust clouds full of baby stars, and galaxies near the beginning of time.
Astronomers spot a sneak peek of Earth's death — a star swallowing a planet whole — for the first time
Telescopes saw into our future when they spotted a burst of light from a distant star. It was gulping down a planet, leaving only dust behind.
The International Space Station is hiding in this mind-blowing photo, as it passes the sun. Can you spot it?
Photographer Andrew McCarthy drove three telescopes into the desert and snapped thousands of images to capture the space station transiting the sun.
When, where, and how to see the rare alignment of 5 planets in the night sky this month
A rare planetary alignment is happening March 25-28. Mars, Venus, Mercury, Jupiter, and Uranus will be visible in the night sky in an arc formation.
How exoplanet hunters find alien worlds hundreds of light-years away and figure out if they have water
Using data from space telescopes, researchers recently found two possible water-rich exoplanets. It bolsters hope for finding life beyond Earth.
On Pluto you could throw a baseball over the Great Pyramid of Giza, a scientist's animation reveals
Earth and Mars are similar sizes, but the average person could throw a ball much, much farther on the red planet, clearing the length of a plane.
Jupiter's aurora triggered a planet-wide heat wave, a map animation reveals, solving a mystery that's puzzled scientists
A heat wave on Jupiter helped astronomers solve the planet's "energy crisis" mystery. Watch the video of an aurora heating the planet.
A mind-boggling photo from NASA's Lucy probe shows how far the moon is from Earth. Can you spot it?
NASA's Lucy spacecraft snapped a rare photo of Earth and the moon together. The moon is farther and fainter than you might think. Let's find it.
NASA's James Webb Space Telescope just snapped the clearest image of Neptune's rings in 33 years
The new snapshots are the best view of Neptune's rings since the Voyager 2 probe flew by Neptune in 1989, on its way out of the solar system.
New photos show the Orion Nebula, a star nursery 1,350 light-years from Earth, in great detail. Scientists have been waiting on them for 5 years.
The Orion Nebula shares a similar environment to that in which our solar system was formed over 4.5 billion years ago.
Side-by-side Jupiter images show James Webb's infrared prowess. It spots auroras, rings, and faint galaxies Hubble can't see clearly.
Webb's new images of Jupiter showcase its auroras, rings, and extremely faint galaxies, which Hubble can't see.
NASA's James Webb Space Telescope imaged Jupiter's rings and moons, in white-hot infrared
NASA's new Webb telescope is powerful enough to capture galaxies 13 billion light-years away, and sensitive enough to spot Jupiter's thin rings.
Astronomers discover whirling electric winds at Saturn's north pole, solving a decades-old NASA mystery
Saturn's aurora borealis, unlike auroras on other planets, is driven by a powerful weather system. The winds drag Saturn's magnetic field lines.
Astronomers discover the youngest known pair of asteroids in our solar system. The space rocks are just 300 years old.
Asteroids can reveal the beginnings of our solar system and its planets. But these two asteroids broke away from their parent rock just 270 years ago.