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A measurement of all the starlight ever produced
How much starlight has our universe produced? According to a new study, stars have radiated 4x1084 photons since the start of the universe 13.7 billion years ago. That's the number 4 with 84 zeros behind it.
December 5, 2018
A giant relic of a disrupted tadpole galaxy
The tail of the "tadpole" is some 500,000 light-years long. If it were at the distance of the Andromeda galaxy - about 2.5 million light years from Earth - it would reach a fifth of the way to our own Milky Way.
December 4, 2018
OSIRIS-REx spacecraft arrives at Bennu
After traveling through space for more than 2 years, NASA’s OSIRIS-REx spacecraft arrived on Monday at its destination, asteroid Bennu.
December 3, 2018
Astronomers’ 1st close-up look near a supermassive black hole
For the 1st time, researchers have been able to observe the motion of gas clouds around a central supermassive black hole. This particular black hole powers the famous quasar 3C 273.
December 3, 2018
Some TRAPPIST-1 exoplanets may be like Venus
How habitable are the 7 Earth-sized exoplanets of the nearby star TRAPPIST-1? Updated climate models suggest some may be similar to Venus, but at least one world may have oceans like Earth.
December 3, 2018
Live coverage of spacecraft arrival at asteroid December 3
The OSIRIS-REx spacecraft is scheduled to rendezvous with its targeted asteroid, Bennu, on Monday, December 3, 2018, at approximately 17:00 UTC (noon EST).
December 2, 2018
Small asteroid to sweep close this weekend
The low velocity of asteroid 2018 WV1 suggests it's a fragment of the moon, ejected when a larger asteroid hit the moon long ago. It'll pass closest during the night Saturday, according to clocks in the Americas.
December 1, 2018
Take 2 trips around Earth, from space
It's been 20 years since the launch of the International Space Station. To celebrate, enjoy this video timelapse of 2 trips around Earth, via ISS astronaut Alexander Gerst. Longest-yet timelapse from space!
November 30, 2018
ExoMars will land in Oxia Planum in 2021
The European Space Agency has named Oxia Planum on Mars as the landing site for its ExoMars rover, due to set down in 2021.
November 30, 2018
How did Phobos get so groovy?
Mars' moon Phobos is an enigmatic little world, with unusual grooves cutting across its surface. Now scientists have new evidence to support the theory that they were created by rolling boulders.
November 29, 2018
