Death Star: Eta Carinae, one of the closest stars to Earth is huge and unstable and will likely explode in a supernova in the relatively 'near future' (On an astronomical timeline this could be a million years from now). via NASA #Eta_Carinae #Supernova #NASA
The Event Horizon of a black hole is a name we give to the region of spacetime beyond which anything that drops into it can never come back out. Not even light itself. This is contrasted by a white hole, which literally pushes you away by spitting material at you. Credit: NASA
Supernova N49 ~There are two common routes to a supernova: either a massive star may run out of fuel, ceasing to generate fusion energy in its core, and collapsing inward under the force of its own gravity to form a neutron star or a black hole; or a white dwarf star may accumulate (accrete) material from a companion star until it reaches a critical mass and undergoes a thermonuclear explosion
Giant Blue Planet Discovered Astronomers using the NASA/ESA Hubble Space Telescope have, for the first time, determined the true color of a planet orbiting another star. If seen up close this planet, known as HD 189733b, would be a deep azure blue, reminiscent of Earth’s color as seen from space.