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Hyper-runaway star fled Milky Way disk
University of Michigan astronomers say a hyper-runaway star didn't originate from the galaxy's center, as previously believed. Instead, they say, a cluster of young stars booted it from the galaxy's disk.
March 15, 2019
See the Opportunity rover’s last image
Opportunity - nicknamed "Oppy" - was active on Mars from 2004 until June, 2018, when a planet-wide dust storm covered it. Its final image is a panorama, acquired from Opportunity's final resting place in Mars' Perseverance Valley.
March 15, 2019
Woot! 4,001 exoplanets and counting
The Exoplanet Team, led by the Observatoire de Paris, announced this week that the list of known exoplanets - planets orbiting distant stars - has grown to 4,001!
March 13, 2019
Small asteroid to sweep closer than moon’s distance
The house-sized asteroid - designated 2019 EA2 - will pass safely by our planet on the night of March 21-22, 2019.
March 13, 2019
Astronomers probe a baby star’s mystery gas flows
They used the ALMA telescope to observe a slow outflow and a high speed jet from a newly forming star. These two streams appear misaligned and were apparently launched from different parts of the star-forming disk.
March 12, 2019
How Hubble and Gaia weighed the Milky Way
Scientists used the measured velocities of 44 globular star clusters to measure the mass of our home galaxy, the Milky Way.
March 11, 2019
There may be 50 billion free-floating planets in our galaxy
There are at least 200 billion stars in our galaxy, and perhaps even a greater number of planets. Now a new study suggests there could be an additional 50 billion rogue planets, not orbiting any stars.
March 10, 2019
Eclipse shows moon move in reverse
Check out this interesting eclipse of the sun by Earth's moon on March 6. A NASA spacecraft saw it. During the eclipse, the moon appears to reverse its direction!
March 8, 2019
Clouds for some Earth-sized TRAPPIST-1 exoplanets
The red dwarf star TRAPPIST-1 - about 40 light-years away - has 7 Earth-sized exoplanets orbiting it. A new study puts limits on how many of those worlds have hazy or cloudy atmospheres.
March 7, 2019
How the moon got its sunburn
Every object, planet or person traveling through space has to contend with the sun's damaging radiation - and the moon has the scars to prove it.
March 7, 2019
