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Two recent studies explore the possibility of an ancient ocean on dwarf planet Ceres, largest world in the asteroid belt. If it existed, what happened to it? And could Ceres still have liquid water today?
A new study says a hole in the moon’s Marius Hills region is the skylight of an underground lava tube large enough to house a city.
A webcam on ESA’s Mars Express has acquired an unprecedented catalog of more than 21,000 images, providing a global survey of unusual, high-altitude, martian clouds.
This new 2.3-gigapixel image of the Fornax Galaxy Cluster – one of the largest images ever released by European Southern Observatory – might make you feel small.
Finally, scientists know how the universe makes gold. They’ve seen it created in the cosmic fire of 2 colliding stars via the gravitational wave they emitted.
Pluto will cross the plane of the ecliptic – the Earth-sun plane – in 2018. This hasn’t happened since 1931, near the time of the Pluto’s discovery. Astronomers are getting ready!
Using the same technology Tesla is using to teach cars to drive themselves, European astronomers are using artificial intelligence to seek out and find many new gravitational lenses.
“Cassini managed to survive for 91 seconds in this epic battle, before tipping over backward during the last 8 seconds and then finally losing radio contact with Earth.”
Astronomers use astronomical units – or AU – to describe solar system distances. Definition of AU here. Also, mean distances in AU to prominent solar system objects.
It’s the best and most stable example to date of a near-Earth companion, or “quasi-satellite.” It’s a small asteroid called 2016 HO3. It travels along with Earth in orbit around the sun.
Show friends and family 2 planets
Cloud-to-cloud shadow over China