It’s #BlackFriday, but we don’t do much shopping in space. Instead, join us for our 6th annual #BlackHoleFriday where we’ll share awesome images and facts about black holes! https://go.nasa.gov/2FB9qQD
Category: cosmology – Page 452
‘God of chaos’: Milky Way star on the brink of massive gamma-ray supernova explosion
A star 8,000 light years from Earth is on the verge of a huge supernova explosion, which could produce the Milky Way’s first gamma-ray explosion, a dangerous and extremely energetic event.
Australian scientists at the University of Sydney discovered the rare ‘God of chaos’ star, which they say could produce the Milky Way’s first known gamma-ray burst, a lethal combination of dust and gas mixed with wind as fast as 12 million km/ph, which is one of the most extreme energetic events after the Big Bang.
What do sand, glass ⌛ and this technicolor remnant of a supernova 💥 have in common?
They all contain silica, a mineral that’s widespread on Earth and in space.
Using NASA’s Spitzer Space Telescope, researchers found that the material is produced by the massive explosions of stars. Details: https://go.nasa.gov/2r6Zq7P
The life cycle of a neutron star
When a massive star somewhere in our galaxy runs out of fuel, it collapses and explodes in a supernova.
The death of that star is the birth of a neutron star: one of the densest known objects in the universe:
Star spotted on the brink of a gamma ray burst – and it’s alarmingly close to Earth
With the power to unleash as much energy in 10 seconds as the Sun does in its entire lifetime, gamma-ray bursts (GRBs) are the most energetic events in the universe, second only to the Big Bang itself. Given how sudden they are, we don’t usually get any warning, but now astronomers have spotted the telltale signs of a star system that could blow its lid any moment – and it’s far too close to Earth for comfort.
A dark matter hurricane is headed our way
According to a recent paper, the Earth is caught directly in the crosshairs of a cosmic hurricane. A swarm of nearly 100 stars, accompanied by an even greater amount of dark matter, is aimed directly at our stellar neighborhood and there’s nothing we can do to stop it; in fact, the vanguard is already upon us. This sounds like a perfect summer blockbuster movie, starring The Rock and Chris Pratt, or maybe Scarlett Johansson and Charlize Theron.
Observing Supermassive Black Holes in Virtual Reality
Click on photo to start video.
Researchers have created a virtual reality simulation of a supermassive black hole. In a recent paper in “Computational Astrophysics and Cosmology” they present their latest visualization. The simulation is based on the black hole in the center of our own Galaxy; Sagittarius A* (Sgr A•. Read this SpringerOpen blog to learn more. https://bit.ly/2S2Xh8p
