black hole
Galactic Gas Cloud Could Help Spot Hidden Black Holes
The heart of our Milky Way galaxy is an exotic place. It's swarming with gigantic stars, showered by lethal blasts…
Black Hole Jets Might Be Molded by Magnetism
Visible-light Hubble image of the jet emitted by the 3-billion-solar-mass black hole at the heart of galaxy M87 (Feb. 1998)…
“Oddball” Galaxy Contains the Biggest Black Hole Yet
Image of lenticular galaxy NGC 1277 taken with Hubble Space Telescope. (NASA/ESA/Andrew C. Fabian) It's thought that at the heart…
X-rays Reveal a Stellar-Mass Black Hole in Andromeda
[/caption] An ultraluminous x-ray source (ULX) previously spotted in the neighboring Andromeda galaxy by NASA's Chandra observatory has now been revealed…
Chandra Spots a Black Hole’s High-Speed Hurricane
[/caption] Astronomers using NASA's Chandra X-ray Observatory have reported record-breaking wind speeds coming from a stellar-mass black hole. The "wind", a high-speed…
First-Ever Image of a Black Hole to be Captured by Earth-Sized Scope
[/caption] "Sgr A* is the right object, VLBI is the right technique, and this decade is the right time." So…
First Look at a Black Hole’s Feast
A true heart of darkness lies at the center of our galaxy: Sagittarius A* (pronounced "A-star") is a supermassive black…
Black Hole Drive Could Power Future Starships
[/caption] What would happen if humans could deliberately create a blackhole? Well, for starters we might just unlock the ultimate…
What is an Event Horizon?
The event horizon of a black hole is the boundary ('horizon') between its 'outside' and its 'inside'; those outside cannot…
Hawking Radiation
[/caption] When humans starve, they grow thin and eventually die; when a black hole starves, it too grows thin and…