Some black holes spin at about half the speed of light!
Astronomers used data from three X-ray satellites and found a black hole that spins at about 50% the speed of light!
Dark Energy may get stronger over time!
Astronomers used X-ray data from NASA’s Chandra X-ray observatory and ESA’s XMM-Newton satellite as well as ultraviolet data from Sloan Digital Sky survey (SDSS) and found evidence that dark energy is getting stronger with time!!
Astrophysicists measured all the starlight the observable universe has produced!!
Scientists used the Fermi telescope to measure the entire amount of starlight ever emitted! According to the measurement, the number of photons (particles of visible light) that escaped into space after being emitted by stars translates to 4×1084!! This is 4 followed by 84 zeros!!!
Ricardo Giacconi, the founder of X-ray astronomy, dies
Ricardo Giacconi, known as the founder of X-ray astronomy, died on Sunday 9th of December at the age of 87.
Supermassive Black Holes: Environment and Evolution, Corfu, 19-22 June 2019
The X-ray group of IAASARS at NOA, organises a conference in Corfu, Greece, in 19-22 June 2019. The title of the conference is: “Supermassive Black Holes: Environment and Evolution”
An orphan Gamma Ray Burst
Astronomers detected a Gamma Ray Burst (GRB) candidate that its gamma rays were not detected by our telescopes!!