fyeahuniverse:

^{Laser Guide Star to be installed at the VLT}

^{Making high quality observations from Earth’s surface is a challenge. The atmosphere causes turbulence causing the the twinkle that we see in the stars, and also making them blur. Without any correction the resolution of a giant telescope generally isn’t much better than a 0.1m aperture telescope.}

^{In order to compensate for this distortion, astronomers created what is called adaptive optics. Adaptive optics is where they observe a close star and measure the blurring of it. They then use a deformable mirror to cancel out the distortion. However, when there isn’t a close bright star, they need an artificial one. This is where the new laser comes in: it will be much more compact than the previous model and will have a power upgrade from 5W to 18W. This breakthrough in technology will allow much better imaging; a quality higher than Hubble.}

^{(Image credit: TNO/Fred Kamphues/ESO)}

ikenbot:

Supermassive Black Hole at Work

Image Credit: NASA, S. Gezari (The Johns Hopkins University), and J. Guillochon (University of California, Santa Cruz)

Back in 2010, astronomers witnessed an explosion of light from a star that was obliterated by a supermassive black hole. This is an accurate computer simulation of the event that took place.

Space is amazing.