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What’s on the far side of the moon?
The far side of the moon sees its share of sunlight. With all due respect to Pink Floyd, the moon's far side is dark only in the sense that it's mysterious. Here's why.
April 29, 2019
Mystery solved: Mercury has a solid heart
Here's how NASA's MESSENGER mission - which orbited Mercury from 2011 to 2015 - let scientists finally solve one of Mercury's biggest mysteries, about whether its innermost core is liquid or solid.
April 28, 2019
The day the asteroid might hit
For the 1st time, the European Space Agency will cover progress of a hypothetical asteroid impact scenario - this week - live via social media, from the heart of the Planetary Defense Conference in Washington, DC.
April 28, 2019
TESS discovers its 1st Earth-sized exoplanet
Launched in 2018, TESS is NASA's new space-based exoplanet hunter. Now it's found its 1st Earth-sized world orbiting a nearby star. The discovery bodes well, scientists say, for finding more similar worlds in the near future.
April 26, 2019
Listen to 1st-ever recorded marsquake
On April 6, NASA’s Mars InSight lander captured the 1st-ever audio of a likely “marsquake.”
April 25, 2019
Did an interstellar traveler hit Earth in 2014?
'Oumuamua - 1st known object to sweep past us from beyond our solar system - caused a stir when astronomers spotted it in 2017. Now a new study suggests another interstellar object might have hit the Earth in 2014.
April 25, 2019
Universe’s 1st type of molecule found at last
Scientists have detected the 1st type of molecule that ever formed in the universe - a combination of helium and hydrogen called helium hydride - in a planetary nebula near the constellation Cygnus.
April 24, 2019
Scientists find new surprises about Titan’s lakes
Cassini data now reveal that some of Titan's lakes are surprisingly deep.
April 23, 2019
One comet, 70 thousand images
Scientists released the OSIRIS Image Viewer to make the amazing images of comet 67P - acquired by the Rosetta spacecraft - easily accessible on the internet.
April 21, 2019
Closest rocky exoplanets could support life
Intense UV radiation from red dwarf stars was thought to make potentially habitable exoplanets unable to support life. But a new study of the 4 nearest rocky worlds suggests otherwise.
April 21, 2019
