Black hole and Hubble

Updated: Oct 23, 2019

A black hole is a place in space where gravity pulls so much that not even light can get out. Since no light can get out black holes can't be seen. They are invisible. Certain space telescopes can detect black holes through special tools. These special tools can observe how stars close to black holes act differently than other stars.

Scientists can see how the gravity of black holes affect the stars close to them. Black holes come in different sizes. Some are small, others are stellar and some are supermassive. Stellar ones are formed when the center of very big stars collapse upon itself. A supernova is created. We don't know for sure how supermassive and small black holes were created. There's no need to worry about a black hole destroying earth. That probability is very slim. Image credit:

Reference #blackholes#astronomy #space //Shohra Falah

Smile for Hubble! In the center of the above image,taken with the NASA/ESA Hubble Space Telescope, is the galaxy cluster

SDSS J1038+4849 — and it seems to be smiling. You can make out it's two yellow eyes and a white button nose. Galaxy clusters are the most massive structures in the Universe and exert such a powerful gravitational pull that they warp the spacetime around them and act as cosmic lenses which can magnify, distort and bend the light behind them. This phenomenon, referred to as

"Gravitational Lensing", is crucial to many of Hubble's discovery

and can be explained by Einstein's theory of general relativity. In this particular case of gravitational lensing, a ring ( known as an Einstein Ring ) is produced from this bending of light, a consequence of the exact and symmetrical alignment of the source, lens and observer and resulting in the ring-like structure observed here. Aside from a range of possible Pareidolia cases, this effect is very important for space exploration as it allows for further and relatively easier view of what would otherwise require a lot more to acquire.//Julia

Reference Image Credit: NASA

#blackhole #Shohra #ShohraFalah #Hubble

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