A gamma ray burst lasted so long it triggered a satellite twice

Gamma ray bursts (GRBs) are the most powerful astrophysical phenomena in the universe. For a span of seconds to a few minutes, they can be the most powerful high-energy event in the sky, shining across billions of light years.

Tidal capture of an asteroid by a magnetar

Recently astronomers have been able to associate two seemingly unrelated phenomena: an explosive event known as a fast radio burst and the change in speed of a spinning magnetar. And now new research suggests that the cause ...

Light supergiant reveals a missing evolutionary stage

Dr. Varsha Ramachandran from the Center for Astronomy of Heidelberg University (ZAH) and her colleagues uncovered the first "stripped" star of intermediate-mass. This discovery marks a missing link in our picture of stellar ...

Numerous blue supergiants observed in detail

Stars are the basic elements of construction of galaxies, and therefore of the observable universe. Among the different types of stars there are some whose mass is more than eight times the mass of the sun; these are termed ...

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