Scientists have discovered the strongest evidence to date for a stratosphere on a planet outside our solar system, or exoplanet. A stratosphere is a layer of atmosphere in which temperature increases with higher altitudes. “This result is exciting because it shows that a common trait of most of the atmospheres in our solar system —…
Gravitational Wave Kicks Monster Black Hole Out of Galactic Core
Hubble Dates Black Hole’s Last Big Meal
For the supermassive black hole at the center of our Milky Way galaxy, it’s been a long time between dinners. NASA’s Hubble Space Telescope has found that the black hole ate its last big meal about 6 million years ago, when it consumed a large clump of infalling gas. After the meal, the engorged black…