A Ninth Planet in Our Solar System?
The unexpected behavior of some Kuiper belt objects could be explained by the presence of a distant, planet-sized object yet undetected in our solar system.
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Featured Image: A New Look at Malin 1
We now have a spectacular new view of the very faint spiral galaxy Malin 1, located roughly 1.2 billion light-years away.
A Gap in TW Hydrae’s Disk
Recent observations of TW Hydrae, a star just 176 light-years away, have confirmed the existence of a gap within the disk surrounding it. Could this be a sign of an orbiting planet?
AAS Publishing: What Can WorldWide Telescope Do for You?
WorldWide Telescope has moved to the AAS! Read on to find out how you can use WWT for research, education, and fun.
The Hunt for Dwarf Galaxies’ Ancestors
Can we detect the distant ancestors of local dwarf galaxies? A recent study aims to find out.
AAS 227: Day 4
Reporting from the fourth day at the 227th AAS Meeting in Kissimmee, FL. Follow along for the latest updates!
AAS 227: Day 3
Reporting from the third day at the 227th AAS Meeting in Kissimmee, FL. Follow along for the latest updates!
AAS 227: Day 2
Reporting from the second day at the 227th AAS Meeting in Kissimmee, FL. Follow along for the latest updates!
AAS 227: Day 1
This week we’re at the 227th AAS Meeting in Kissimmee, FL. Follow along for the latest updates from the meeting!
AAS 227: Welcome!
This week we’ll be bringing you updates from the 227th AAS meeting in Kissimmee, FL.
Selections from 2015: Close Encounter of Our Solar System with Another Star
A low-mass binary star system passed by our solar system only 70,000 years ago, clipping the outer edge of the Oort cloud as it passed.
Selections from 2015: Earth-Sized Planet Found in Star’s Habitable Zone
In July, a team reported the discovery of Kepler-452b, the first near-Earth-size world to be found in the habitable zone of star that is similar to our Sun.