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Recent Activity

Variable Star Observations in Database:

32,994,363 and Counting ...
Last Observation Received:

55 sec ago by MMH - Marek Muciek (PL)

RR CEP   Apr 22.8681   11.3Vis.   

Plot RR CEP light curve


Stellar News Feed

Secrets of a jet: what we learned from a supermassive black hole

The nearby, giant radio galaxy M87 hosts a supermassive black hole and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. 

Read more here

ALMA Captures Dramatic Stellar Fireworks from young stars

Astronomers, using ALMA, captured dramatic images as they explored the firework-like debris from the birth of a group of massive stars, demonstrating that star formation can be a violent and explosive process.

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Search for stellar survivor of a supernova explosion

Astronomers have used the NASA/ESA Hubble Space Telescope to observe the remnant of a supernova explosion in the Large Magellanic Cloud. Beyond just delivering a beautiful image, Hubble may well have traced the surviving remains of the exploded star’s companion.

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Black hole winds form new stars!

Observations using ESO’s Very Large Telescope have revealed stars forming within powerful outflows of material blasted out from supermassive black holes at the cores of galaxies. These are the first confirmed observations of stars forming in this kind of extreme environment.

Read full story here

The Secret (X-Ray) Lives of Cepheids: The Surprising Discovery of a New Class of Pulsating X-Ray Stars

Data recently returned for d Cep from the Chandra X-ray Observatory, combined with previous X-ray measures secured with the XMM-Newton X-ray satellite, have shown that d Cep has X-ray variations occurring in accord with the supergiant star's 5.4 day pulsation period. X-rays are observed at all phases of the star’s pulsations, but sharply rise by ~400% near the times when the star swells to its maximum diameter of about 45 times that of the Sun.

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