Skip to main content

Support the AAVSO

 

Learning Opportunities from the AAVSO

Read more...

NEW!! AAVSO Target Tool

Read more...

Annual Meeting 2017 Nashville, TN

Registration now open!!!

Read more...

Solar Eclipse - August 21, 2017

Read more...

2017 Annual Campaign Donate Today!

Read more...

Pick a Star

Type star name then click action.
Learn More
Recent Activity
 
 

News Archives

Variable Star Observations in Database:

33,317,951 and Counting ...
Last Observation Received:

18 min 48 sec ago by SFRA - Frank Schorr (US)

S_CAS   Jun 12.2290   9.676V   

Plot S_CAS light curve

 
 

Stellar News Feed

A Very Rare Discovery: Failed Star Orbits a Dead Star Every 71 Minutes

Synergy between the rejuvenated Kepler space telescope (K2) and ground-based facilities reveal the properties of a rare cataclysmic variable: a brown dwarf orbiting a white dwarf every 71 minutes.

Read more here

Submitted by stellakafka on Mon, 06/12/2017 - 09:41

Chandra reveals a ring around R Aquarii’s equator: evidence of the 1073 nova eruption?

R Aquarii (R Aqr) is a binary star system consisting of a white dwarf with a Mira star companion. Over 17 years of x-ray monitoring with the Chandra x-ray telescope have revealed new information on the system,  including a ring of material around its equator - a likely leftover from the 1073 nova eruption.  

Read more here

Submitted by stellakafka on Tue, 06/06/2017 - 13:16

How do stars fall in a black hole? Is it a bang, a crash or a fizzle?

Researchers discuss observational results assessing what happens to a star trapped by a supermassive black hole, and the role of an “event horizon”.

Read more here

Submitted by stellakafka on Tue, 05/30/2017 - 12:13

Massive Dying Star Goes Out With a Whimper Instead of a Bang

Now you see it, now you don’t: recording the death or a massive star (and the birth of a black hole), without a supernova explosion!

Read more here

Submitted by stellakafka on Thu, 05/25/2017 - 14:32

Small telescopes discovered styrofoam-density exoplanet orbiting a bright star

A team from the KELT collaboration have discovered an exoplanet that is highly inflated, so that while it's only a fifth as massive as Jupiter, it is nearly 40 percent larger, making it about as dense as Styrofoam. The planet is orbiting the V = 8 Subgiant HD 93396 in the southern hemisphere.

Read more here

Submitted by stellakafka on Wed, 05/17/2017 - 11:57

AAVSO is an equal opportunity and discrimination/harassment-free environment. Please read our policies here.

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484