Uranus is the seventh planet from the sun and was the first to be discovered.
A storm of cosmic impacts may have ended relatively early on Mars, suggesting that the Red Planet was habitable longer than scientists previously thought, a new study finds.
Mysterious rare meteorites made of a mix of stone and iron likely formed when Vesta, the brightest asteroid in the sky, experienced a giant impact, a new study finds.
If lightning exists on Mars, it may be less energetic and frequent than lightning on Earth, all because of the Red Planet's thin air, a new study finds.
For the first time, astronomers may have imaged the cool disk of gas surrounding the gigantic black hole at the heart of the Milky Way, a new study finds.
Astronomers may have spotted a distant star spitting out a giant flare that packed 100,000 times more energy than any seen from Earth's sun, a new study finds.
The first rover on the far side of the moon may have discovered the first samples from the moon's mantle, released from the lunar interior by a giant, ancient cosmic impact, a new study finds.
The moon is still tectonically active, like Earth, generating moonquakes just like our planet creates earthquakes, a new study based on Apollo mission data found.
Learn about the physical characteristics of Saturn and its famous rings, what we know about Saturn’s moons and Saturn’s roots in Greek mythology.
Water worlds that each possess thousands of times more water than Earth does may be more common than Earth-like rocky planets in the Milky Way galaxy, a new study finds.
Most of the universe's gold, uranium and other heavy elements are generated from rapidly whirling collapsing stars, a new study finds.
Enough gold, uranium and other heavy elements about equal in mass to all of Earth's oceans likely came to the solar system from the collision of two neutron stars billions of years ago.
Upcoming gravitational-wave observatories both on Earth and in space could soon help solve some of the greatest mysteries in science.
The first meteor to hit Earth from interstellar space — and the second observed interstellar visitor overall — may have just been discovered, a new study finds.
Meteoroid impacts regularly liberate puffs of water vapor from the moon, suggesting that minuscule amounts of water may lurk just under the entire lunar surface, a new study finds.
Mice on Earth may like running in wheels, but mice in space apparently take advantage of the microgravity to run in circles by bouncing off the walls.
The secret of the project's success is linking radio dishes across the globe to create a virtual telescope about the size of Earth.
On Wednesday (April 10), the international Event Horizon Telescope project will release the first results from its plan to image black holes. But what exactly is an event horizon?
New answers for mysteries concerning Saturn's moons could shed light on whether one, Enceladus, could support life.
To see if there was a universe before the Big Bang and understand how the cosmos evolved after it began, researchers suggest looking for the influence of particles that acted like clocks.
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