An international team of astronomers reports the discovery of a new ultra-faint dwarf galaxy as part of the DECam Local Volume Exploration (DELVE) survey. The newly found galaxy, designated Pegasus IV, has an absolute magnitude ...
Black holes with masses equivalent to millions of suns do put a brake on the birth of new stars, say astronomers. Using machine learning and three state-of-the-art simulations to back up results from a large sky survey, researchers ...
Astronomy
Mar 22, 2022
1
378
Researchers have observed extremely high rates of melting at the bottom of the Greenland Ice Sheet, caused by huge quantities of meltwater falling from the surface to the base. As the meltwater falls, energy is converted ...
Earth Sciences
Feb 21, 2022
18
845
Marine life hitching a ride on ocean-crossing ships poses a threat to Antarctica's pristine ecosystems, with the potential for invasive species to arrive from almost anywhere across the globe, say the authors of a new study.
Ecology
Jan 10, 2022
1
624
Rogue planets are elusive cosmic objects that have masses comparable to those of the planets in our Solar System but do not orbit a star, instead roaming freely on their own. Not many were known until now, but a team of astronomers, ...
Astronomy
Dec 22, 2021
2
2394
When Delphi-Facebook and the U.S. Census Bureau provided near-real time estimates of COVID-19 vaccine uptake last spring, their weekly surveys drew on responses from as many as 250,000 people.
Mathematics
Dec 8, 2021
3
130
Using the Giant Metrewave Radio Telescope (GMRT), Indian astronomers have conducted radio observations of a galaxy cluster known as Abell 725. Results of this observational campaign deliver important information regarding ...
The final frontier has rarely seemed closer than this—at least virtually.
Astronomy
Oct 12, 2021
0
472
Several years ago, while analyzing ice core samples from Antarctica's James Ross Island, scientists Joe McConnell, Ph.D., and Nathan Chellman, Ph.D., from DRI, and Robert Mulvaney, Ph.D., from the British Antarctic Survey ...
Earth Sciences
Oct 6, 2021
0
416
As their name suggests, ultradiffuse galaxies, or UDGs, are dwarf galaxies whose stars are spread out over a vast region, resulting in extremely low surface brightness, making them very difficult to detect. Several questions ...
Astronomy
Sep 6, 2021
6
1232
