Astronomers are learning a bit more about Mercury with the help of the MESSENGER spacecraft.
Astronomers have made a startling discovery in a nearby galaxy. They've found a planetary system orbiting a star that's only 54 light-years away; all three of the planets are "super Earths."
Imagine soaring through space to Mars with the help of a solar sail. Sounds like something out of a science fiction movie, right? But it may just be possible.
A strange supernova is actually the missing link between supernova explosions that generate gamma-ray bursts (GRBs) and those that don't. The new findings reveal a bit more about these explosive stars.
Scientists have created the most comprehensive map of the universe to day. They've made a 3D map of the universe that spans nearly two billion light-years.
To us, the universe looks three dimensional. But one of the theories of theoretical physics challenges this assumption.
Scientists may have solved a long-standing puzzle regarding the nature of disk galaxies.
Scientists have discovered that "comatose" galaxies can be resurrected. If clusters of galaxies merge, a cosmic tsunami can drive the birth of a new generation of stars.
Astronomers have spotted 11 runaway galaxies that have been flung from their original homes to wander through space.
Happy birthday, Hubble! Twenty-five years ago, the NASA/ESA Hubble Space Telescope was launched into orbit aboard the space shuttle Discovery as the first ever space telescope of its kind.
Scientists have taken a closer look at the monstrous stars that formed in our early universe.
Saturn's moon, Titan, is the only moon in the solar system that has an atmosphere as thick of the Earth's. Now, scientists have discovered that Titan's atmosphere may fluctuate according to the sun's 11-year solar cycle.