A ring of dust and gas around a distant young star appears to have vanished without a trace.
Winners of the Origins of Life Challenge, a privately funded award looking for how life first began, have been announced.
One important interstellar molecule has puzzled scientists for years, but a return to the basics of quantum mechanics has allowed them to understand it at last.
National parks across the United States stand ready to help visitors safely view the Venus' last transit of the sun for more than a hundred years.
The thin atmosphere of Mars, once thought unable to maintain winds to move dunes, could in fact be helping them shift today.
The discovery of this volcanic glass on Mars could steer scientists toward subglacial lakes where life could thrive.
NASA's NuSTAR mission will peer through the dust and gas to see what what lies in the centers of other galaxies.
Some remnants of Martian lakes boast clays that could have preserved signs of life, while still more might remain buried beneath the surface
The close pass of the asteroid Eros this week allows astronomy buffs to measure the size of the solar system.
The sun's violent activity expands Earth's atmosphere, which increases the rate that space junk falls from orbit.
Dangerous electrons from nearby radiation belts are more likely to escape into space than spiral down toward Earth.