Stellar winds

Cygnus X-1 as photographed by the Chandra Space Telescope.

"Dancing" jets from a black hole revealed their immense power

New research shows that the power of Swan X-1's jets is equivalent to the energy output of 10,000 suns, providing the first direct measurement of the jet's instantaneous power and speed.
A supernova explosion. Illustration: depositphotos.com

The unexpected revival of supernova 1181 

Supernova 1181, produced by the dramatic collision of two white dwarf stars, was studied using a combination of historical records and modern astronomy. The remains, now identified in the constellation Cassiopeia, reveal a complex structure with