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Archive for the ‘cosmology’ category: Page 345

Nov 30, 2018

This dark

Posted by in categories: cosmology, materials

This dark, tangled web spotted by NASA’s Hubble Space Telescope is a supernova remnant, created after a massive star ended its life in an explosion and threw its constituent material out into surrounding space. Discover more: https://go.nasa.gov/2G0nVgS&h=AT0m92-1V7h2Z6pdebGy-JSLFW…CsgI5QIBpg

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Nov 29, 2018

If Light Can’t Escape Black Holes, How Do We Get Photos of Them… and More Questions From Our Readers

Posted by in category: cosmology

You asked, we answered.

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Nov 25, 2018

Unexpectedly Vanishing Quasars Are Mystifying Scientists

Posted by in category: cosmology

Quasars powered by supermassive black holes have been unexpectedly vanishing. Scientists have started to figure out why.

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Nov 23, 2018

You’ve got to move fast on #BlackFriday2018 when there are limited quantities

Posted by in categories: cosmology, materials

Here’s a look at fast-moving jet material from the powerful gravity of a supermassive black hole when a star wandered just a little too close: https://go.nasa.gov/2FAO1XB #BlackHoleFriday

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Nov 22, 2018

Massive Triple Star System Creates this Bizarre Swirling Pinwheel of Dust. And it Could be the Site of a Gamma Ray Burst

Posted by in category: cosmology

When stars reach the end of their lifespan, many undergo gravitational collapse and explode into a supernova, In some cases, they collapse to become black holes and release a tremendous amount of energy in a short amount of time. These are what is known as gamma-ray bursts (GRBs), and they are one of the most powerful events in the known Universe.

Recently, an international team of astronomers was able to capture an image of a newly-discovered triple star system surrounded by a “pinwheel” of dust. This system, nicknamed “Apep”, is located roughly 8,000 light years from Earth and destined to become a long-duration GRB. In addition, it is the first of its kind to be discovered in our galaxy.

Continue reading “Massive Triple Star System Creates this Bizarre Swirling Pinwheel of Dust. And it Could be the Site of a Gamma Ray Burst” »

Nov 22, 2018

It’s #BlackFriday, but we don’t do much shopping in space

Posted by in category: cosmology

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

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Nov 21, 2018

‘God of chaos’: Milky Way star on the brink of massive gamma-ray supernova explosion

Posted by in category: cosmology

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.

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Nov 21, 2018

What do sand, glass ⌛ and this technicolor remnant of a supernova 💥 have in common?

Posted by in categories: cosmology, materials

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

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Nov 21, 2018

Why Changing-Look Quasars Appear to Vanish

Posted by in category: cosmology

Quasars powered by supermassive black holes have been unexpectedly vanishing. Scientists have started to figure out why.

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Nov 20, 2018

The life cycle of a neutron star

Posted by in category: cosmology

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:

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