News tagged with spitzer space telescope

The anatomy of a stellar outflow

(Phys.org) -- Astronomers used to think that star formation simply involved the gradual coalescence of material under the influence of gravity. No longer. Making a new star is a complex process, among other ...

May 28, 2012
5 / 5 (10) 4 | with audio podcast

Monster galaxies lose their appetite with age

(Phys.org) —Our universe is filled with gobs of galaxies, bound together by gravity into larger families called clusters. Lying at the heart of most clusters is a monster galaxy thought to grow in size ...

Aug 01, 2013
3.8 / 5 (5) 2 | with audio podcast

Hidden galactic nuclei

(Phys.org) -- At the core of most galaxies including our own Milky Way is a massive black hole. Material falling into the environment of the black hole heats up, and can radiate dramatically, sometimes also ...

Aug 10, 2012
5 / 5 (7) 19 | with audio podcast

Infant galaxies merging near 'cosmic dawn'

Astronomers using the combined power of the Atacama Large Millimeter/submillimeter Array (ALMA) telescope and NASA's Hubble Space Telescope have discovered a far-flung trio of primitive galaxies nestled inside ...

Nov 21, 2013
5 / 5 (11) 4 | with audio podcast

Galaxies in the young cosmos

(Phys.org) -- The universe was born about 13.7 billion years ago in the big bang. The Sun and its system of planets formed about five billion years ago. What happened, then, during that long, intervening stretch ...

May 21, 2012
3.5 / 5 (2) 9 | with audio podcast

NGC 6334: A mini starburst region?

(Phys.org) —Stars are known to form in dense clouds of gas and dust, but why do some regions show prodigious rates of star formation, while others barely produce any young stars at all? Many of the richest ...

Jun 05, 2013
5 / 5 (1) 3 | with audio podcast

The rise and fall of galactic cities

(Phys.org) —In the fable of the town and country mice, the country mouse visits his city-dwelling cousin to discover a world of opulence. In the early cosmos, billions of years ago, galaxies resided in ...

Dec 19, 2013
4.9 / 5 (8) 1 | with audio podcast

The spectral energy distribution of protostars

(Phys.org) -- Stars form when gravitational forces coalesce the gas and dust in interstellar clouds until the material forms clumps dense enough to become stars. Precisely how this happens, however, is still ...

Aug 06, 2012
5 / 5 (4) 2 | with audio podcast

Cygnus OB2: Probing a nearby stellar cradle

(Phys.org)—The Milky Way and other galaxies in the universe harbor many young star clusters and associations that each contain hundreds to thousands of hot, massive, young stars known as O and B stars. ...

Nov 08, 2012
4.3 / 5 (3) 0 | with audio podcast

Radio galaxies in the distant universe

(Phys.org) -- For over a decade astronomers have been probing a region of the northern sky, not far from the handle of the Big Dipper, that is relatively free of bright stars and the diffuse glow of the Milky ...

Jun 26, 2012
4.8 / 5 (6) 0 | with audio podcast