The universe

NASA's MAVEN mission and the Hubble Space Telescope have teamed up to reveal new insights into how Mars' water is leaking into space.

BepiColombo made a close flyby of Mercury on Sept. 4, getting just 103 miles (165 kilometers) above the planet.

By demonstrating the ability for joint observations at the short radio wavelength of 0.87mm, the Event Horizon Telescope has improved its observational acuity by half.

To commemorate the 25th anniversary of NASA's Chandra X-ray Observatory, scientists have rereleased new "sonified" images of nearby objects, including the supernova remnant Cassiopeia A.

Energy-packed plasma waves pump enough energy into streams of solar wind to propel them to their unexpectedly high speeds, observations by two sun-studying spacecraft suggest.

A colossal asteroid slammed into Jupiter's largest moon Ganymede with so much power it dramatically and permanently reoriented the moon roughly 4 billion years ago, new research suggests.

A 3-foot (1-meter) asteroid burned up harmlessly over the Philippines today (Sept. 4) after being detected just this morning.

Any lunar resource evaluation or prospecting campaign will need to be international in nature, as no one space agency will have the money or mandate to conduct it alone.

Located about 3 million light-years from Earth, the Tucana Dwarf galaxy sits at the far edge of the Local Group of galaxies and is home to aging stars that may hold clues from the early universe.

By using protons to probe how a magnetic field responds to an expanding plasma, experimenters have replicated the particle jets spewed out by active black holes.