Collisions between galaxies, and even less dramatic gravitational encounters between them, are recognized as triggering star formation. Observations of luminous galaxies, powered by starbursts, are consistent with this conclusion. ...
Astronomy
Mar 2, 2015
1
50
(Phys.org) —ltra-luminous infrared galaxies ((ULIRGs) are galaxies whose luminosity exceeds that of a trillion suns, By way of comparison, our Milky Way galaxy has a typical modest luminosity of only about ten billion suns. ...
Astronomy
Jun 27, 2014
3
0
(Phys.org) —Cosmologists have established that much of the stuff of the universe is made of dark matter, a mysterious, invisible substance that can't be directly detected but which exerts a gravitational pull on surrounding ...
Astronomy
Apr 17, 2014
20
1
Luminous galaxies far brighter than our Sun constantly collide to create new stars, but Oxford University research has now shown that star formation across the Universe dropped dramatically in the last five billion years.
Astronomy
Jan 16, 2014
5
4
(Phys.org) —NASA's Hubble Space Telescope and Spitzer Space Telescope joined forces to discover and characterize four unusually bright galaxies as they appeared more than 13 billion years ago, just 500 million years after ...
Astronomy
Jan 7, 2014
3
4
(Phys.org) —NASA's Hubble Space Telescope has revealed the first visual evidence of how our home galaxy, the Milky Way, assembled itself into the majestic pinwheel of stars we see today.
Astronomy
Nov 14, 2013
2
3
(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) is emitted at infrared ...
Astronomy
Sep 23, 2013
1
0
(Phys.org) —With the advent of powerful space infrared telescopes like the Spitzer Space Telescope and the (recently deceased) Herschel Space Telescope, astronomers have been able to study the properties of dust in galaxies ...
Astronomy
Jun 10, 2013
6
0
(Phys.org) —Astronomers think that many galaxies, including our own Milky Way, have undergone similar collisions during their lifetimes. Although galaxy collisions are important and common, what happens during these encounters ...
Astronomy
Jun 3, 2013
1
0
A research team led by Bunyo Hatsukade, a postdoc researcher, and Kouji Ohta, a professor, both from the Graduate School of Science, Kyoto University, revealed that approximately 80% of the unidentifiable millimeter wave ...
Astronomy
May 31, 2013
10
2
