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A moon for the 3rd-largest dwarf planet
So many moons! With the discovery of a moon for 2007 OR10, most known dwarf planets in the Kuiper Belt - larger than 600 miles across - now are known to have companions.
May 19, 2017
A giant magnetic bridge between galaxies
Known as the Magellanic Bridge, it's a huge stream of neutral gas stretching 75,000 light-years between the 2 Magellanic Clouds, which orbit our Milky Way.
May 18, 2017
What’s the weather like on Proxima b?
The nearest known exoplanet - orbiting the star Proxima Centauri - is only 4.2 light-years away. Does it have liquid water? An atmosphere? Weather? Scientists just announced the first tentative steps to explore those possibilities.
May 15, 2017
Planet circus in May, with explanation
A beautiful spatial view of our solar system from Guy Ottewell, showing the planets’ paths along their orbits in approximately mid-May, 2017, with sightlines to them from the Earth.
May 15, 2017
Eta Aquarid over Mount Bromo
Cool short video of an early morning Eta Aquarid meteor over Mount Bromo in Indonesia, by Justin Ng. Take a few seconds and enjoy!
May 13, 2017
Watch 200th spacewalk Friday
Watch 2 astronauts perform landmark 200th ISS spacewalk on Friday, May 12. Live coverage begins at 6:30 a.m. EDT (10:30 UTC). Links to viewing here.
May 11, 2017
Astronomers find waves in Io’s lava lake
New data on the massive molten lake on Jupiter's moon Io - most volcanically active world in our solar system - suggest 2 lava waves per day, slowly sweeping west to east.
May 10, 2017
Asteroid 2014 JO25: What we learned
This article from NASA's Center for Near-Earth Object Studies provides fresh details on the closest approach by a large asteroid since 2004 ... and shows you how science works.
May 9, 2017
The last of Hubble’s Frontier Fields
With a final observation of remote galaxy cluster Abell 370, the Hubble Space Telescope's mind-stretching Frontier Fields program came to an end.
May 7, 2017
X-ray tsunami in Perseus galaxy cluster
Not so very long ago or far away in astronomical terms, a near-miss between titanic galaxy clusters might have set into motion an immense wave of hot gas.
May 5, 2017
