Galactic "rocket engine" explains unusual stellar motion in galaxies
A discovery by MPIA graduate student Athanasia Tsatsi has changed astronomers' understanding of how mergers of two galaxies can produce unusual stellar motion in the resulting elliptical galaxies, with the ...
Dusty substructure in a galaxy far far away
Scientists at the Max Planck Institute for Astrophysics (MPA) have combined high-resolution images from the ALMA telescopes with a new scheme for undoing the distorting effects of a powerful gravitational ...
Observing galactic 'blow out': Stellar growth spurts stunt future growth
(Phys.org)—For the first time, an international team of astronomers, led by Dr James Geach from the University of Hertfordshire, has revealed the dramatic 'blow out' phase of galactic evolution.
Big black holes can block new stars
Massive black holes spewing out radio-frequency-emitting particles at near-light speed can block formation of new stars in aging galaxies, a study has found.
Does the galactic spiral lead the rotation of a galaxy?
Yesterday's post on spiral galaxies raised some questions about the rotation of galaxies. Do galaxies rotate with the spiral trailing the motion, or does the spiral lead the rotation of a galaxy? ...
Gaia discovers its first supernova
(Phys.org) —While scanning the sky to measure the positions and movements of stars in our Galaxy, Gaia has discovered its first stellar explosion in another galaxy far, far away.
Image: Hubble sweeps a messy star factory
This sprinkle of cosmic glitter is a blue compact dwarf galaxy known as Markarian 209. Galaxies of this type are blue-hued, compact in size, gas-rich, and low in heavy elements. They are often used by astronomers ...
Is there a statistical bias to the orientation of spiral galaxies?
The image above shows a pair of colliding spiral galaxies known as Arp 274. What's interesting is not that they happen to be colliding, but that the two galaxies are spiraling in opposite directions. The ...
Image: Hubble's view of the polar ring of Arp 230
This image shows Arp 230, also known as IC 51, observed by the NASA/ESA Hubble Space Telescope.
Chandra observatory identifies impact of cosmic chaos on star birth
(Phys.org) —The same phenomenon that causes a bumpy airplane ride, turbulence, may be the solution to a long-standing mystery about stars' birth, or the absence of it, according to a new study using data ...
Using 19th century technology to time travel to the stars
In the late 19th century, astronomers developed the technique of capturing telescopic images of stars and galaxies on glass photographic plates. This allowed them to study the night sky in detail. Over 500,000 ...
Image: Misshapen NGC 2936 galaxy
What do you see in this image from the NASA/ESA Hubble Space Telescope: a porpoise or a penguin?
Chandra weighs most massive galaxy cluster in distant universe
(Phys.org) —Using NASA's Chandra X-ray Observatory, astronomers have made the first determination of the mass and other properties of a very young, distant galaxy cluster.
Researchers find new relationship involving black holes in galaxies with small bulges
Research at Swinburne University of Technology has shown that it is possible to predict the masses of black holes in galaxies for which it was previously thought not possible.