News tagged with black holes

A burst of stars 13 billion years ago

(Phys.org) —The universe immediately following the big bang contained mostly hydrogen and some helium. All the other elements needed to make galaxies, planets, and life were formed in stellar interiors ...

Jun 03, 2013
4.2 / 5 (6) 0 | with audio podcast

Image: Hot gas sloshing in a galactic cauldron

(Phys.org) —Galaxies are social beasts that are mostly found in groups or clusters – large assemblies of galaxies that are permeated by even larger amounts of diffuse gas. With temperatures of 10 million ...

Nov 19, 2013
5 / 5 (5) 18 | with audio podcast

Hoisting a telescope with helium

Many a child has forgotten to hold tight to the string of a helium balloon only to have it escape and rise until it disappeared in the glare of the sun. Helium balloons want to rise, but launching a balloon ...

Sep 01, 2014
5 / 5 (5) 0

Galaxy winds

(Phys.org) —The most luminous galaxies in our universe are not particularly bright in the visible. Most of their energy output (which can be hundreds or even thousands of times more than our Milky Way's) ...

Sep 23, 2013
4.8 / 5 (5) 1 | with audio podcast

Hubble finds jets and explosions in NGC 7793

(Phys.org) —This new image from the NASA/ESA Hubble Space Telescope shows NGC 7793, a spiral galaxy in the constellation of Sculptor some 13 million light-years away from Earth. NGC 7793 is one of the brightest ...

Sep 29, 2014
4.6 / 5 (5) 1

Video: Guide to our Galaxy

This virtual journey shows the different components that make up our home galaxy, the Milky Way, which contains about a hundred billion stars.

Nov 22, 2013
5 / 5 (4) 1

The search for medium-sized black holes

Black holes can be petite, with masses only about 10 times that of our sun—or monstrous, boasting the equivalent in mass up to 10 billion suns. Do black holes also come in size medium? NASA's Nuclear Spectroscopic ...

Nov 27, 2013
5 / 5 (4) 0 | with audio podcast