Features

Update on an Interstellar Asteroid

Here are some of the most recent outcomes in the study of asteroid 1I/’Oumuamua, the first interstellar asteroid we’ve ever detected.

cataclysmic variable

What can you do with a team of people armed with backyard telescopes and a decade of patience? Test how binary star systems evolve under Einstein’s general theory of relativity!

double pulsar
Astrobites

Sensing a Pulsar’s Sense of Rotation

For the first time, we’ve directly determined the direction that a pulsar — a highly magnetized neutron star — is spinning. Astrobites reports on the outcome.

cocoon
AAS News

AAS 231: Day 4

This week we’re at the winter AAS meeting in National Harbor, MD. Here are the highlights from Day 4!

AGN
AAS News

AAS 231: Day 3

This week we’re at the winter AAS meeting in National Harbor, MD. Here are the highlights from Day 3!

BNS
AAS News

AAS 231: Day 2

This week we’re at the winter AAS meeting in National Harbor, MD. Here are the highlights from Day 2!

Jupiter pole
AAS News

AAS 231: Day 1

This week we’re at the winter AAS meeting in National Harbor, MD. Here are the highlights from Day 1!

AAS231
AAS News

AAS 231: Welcome!

This week we’ll be bringing you updates from the 231st AAS meeting in National Harbor, MD.

Millennium Simulation

How does the absence of galactic neighbors influence galaxy evolution? To answer this question, a new study explores the properties of galaxies in cosmic voids.