NASA's Curiosity rover has captured a spectacular new image of a sunset on Mars. The kicker is that this sunset isn't red or gold; it's blue.
Cosmic hot spots may actually have helped form life.
Scientists using NASA's Hubble Space Telescope have discovered that the immense halo of gas enveloping the Andromeda galaxy is about six times larger and 1,000 times more massive than previously thought.
Scientists have developed a very sensitive high frequency amplifier for radio telescopes used on Earth, which may help measure our planet from space more precisely than before.
New observations of a recently exploded star are confirming supercomputer model predictions that the deaths of stellar giants are lopsided in which debris and the stars' cores hurtle off in opposite directions.
Globular clusters are among the oldest objects in the universe. Now, scientists have discovered a newborn example of one of these clusters, revealing a bit more about the rare conditions needed to create new ones.
Asteroids and comets may not just have delivered water to Earth. It turns out that this delivery may be taking place in many other planetary systems, just like it happened on our own planet.
It turns out that Saturn's moon, Enceladus, spews water from its surface, which could have important implications for whether or not the world once supported life.
The U.S. Defense Meteorological Satellite Program F13 satellite recently exploded in orbit. Now, scientists are worried that the debris could pose a risk to other orbiters.
Traffic around Mars is getting a bit busier. Last year's addition of two new spacecraft orbiting the Red Planet brought the total of active Mars orbiters to five, which is the most ever.
A forming planetary system has been seen for the first time. The researchers have discovered that circular gaps in a disk of dust and gas swirling around the young star, HL Tau, are actually made by forming planets.