2007 OR10 has one of the reddest surfaces ever found in our solar system's distant Kuiper Belt. Vote to help decide between 3 possible official names.

New research suggests that volcanoes of molten iron might have erupted onto the surface of metallic asteroids.

On April 10, in coordinated press conferences across the globe, researchers unveiled a history-making image - the 1st ever - of the "shadow" of a supermassive black hole.

Israel's Beresheet spacecraft will attempt the country's 1st-ever and 1st commercial landing on the moon on Thursday, April 11. The landing is expected between 19:00 and 20:00 UTC (2 to 3 p.m. CDT).

Solar physicists predict another weak 11-year solar cycle ahead. At the same time, they expect the coming cycle to break the trend of weakening solar activity seen over the past 4 cycles, and they add there's "no indication we are currently approaching a Maunder-type minimum in solar activity."

For the first time, an in-situ measurement of methane on Mars - made by NASA's Curiosity rover - has been independently confirmed from orbit, by ESA's Mars Express. Could it be a clue to Mars life?

The discovery of fossilized microbes in Martian meteorites has been claimed before. Now scientists in Hungary add a new study of the ALH-77005 meteorite, with some intriguing new evidence.

Watch Mars' moons Phobos and Deimos cross the sun in a pair of solar eclipses last month, in these animations made from images from the Curiosity rover's cameras.

The star is a white dwarf, a cool, dead, dense star like our sun some 6 billion years from now. The planet fragment - made of heavy metals - survived a system-wide cataclysm that followed the star's death.

Mars is a cold, dry desert, but a new study provides tantalizing evidence for liquid water deep below its surface. If it exists, this Mars groundwater might cause the weird dark streaks in Martian craters and canyons.