Webb Reveals Details Never Before Seen in Cassiopeia A
The explosion of a star is a dramatic event, but the remains the star leaves behind can be even more dramatic. A new mid-infrared image from NASA’s James Webb Space Telescope provides one stunning example. It shows the supernova remnant Cassiopeia A (Cas A), created by a stellar explosion 340 years ago from Earth’s perspective. […]
Image the galaxy LEDA 48062 in the constellation Perseus
This image from the NASA/ESA Hubble Space Telescope features the galaxy LEDA 48062 in the constellation Perseus. LEDA 48062 is the faint, sparse, amorphous galaxy on the right side of the image, and it is accompanied by a more sharply defined neighbor on the left – the large, disk-like lenticular galaxy UGC 8603. A smattering […]
Massive Structures Threaten the History of the Universe
Everything we know about the Universe is about to change due to a recent discovery of a massive cluster of galaxies in the constellation of Bootes the Herdsman. British Ph.D. student, Alexia Lopez, was analyzing the light from distant quasars when she discovered the Giant Arc, a cluster of galaxies covering 1/15th of the observable […]
Spectacular Merger of Three Galaxies Observed
A spectacular trio of merging galaxies in the constellation Boötes takes center stage in this image from the NASA/ESA Hubble Space Telescope. These three galaxies are set on a collision course and will eventually merge into a single larger galaxy, distorting one another’s spiral structure through mutual gravitational interaction in the process. An unrelated foreground galaxy […]