Astronomers have assumed for decades that the Universe is expanding at the same rate in all directions. A new study based on data from ESA's XMM-Newton, NASA's Chandra and the German-led ROSAT X-ray observatories suggests ...
Astronomy
Apr 8, 2020
64
5208
On April 10, 2019, the Event Horizon Telescope (EHT) unveiled the first-ever image of a black hole's event horizon, the area beyond which light cannot escape the immense gravity of the black hole. That giant black hole, with ...
Astronomy
Apr 26, 2019
106
995
A multi-institutional team of archaeologists, chemists and environmental scientists using portable X-ray fluorescence on victims of the Pompeii eruption in 79 AD finds that they likely died of asphyxiation. The group has ...
In 1999, the Egyptian chemist Ahmed Zewail received the Nobel Prize for measuring the speed at which molecules change their shape. He founded femtochemistry using ultrashort laser flashes: the formation and breakup of chemical ...
General Physics
Oct 16, 2020
2
2683
This image features a spectacular set of rings around a black hole, captured using NASA's Chandra X-ray Observatory and Neil Gehrels Swift Observatory. The X-ray images of the giant rings reveal information about dust located ...
Astronomy
Aug 5, 2021
125
2766
Astronomers have used NASA's Chandra X-ray Observatory to record material blasting away from the site of an exploded star at speeds faster than 20 million miles per hour. This is about 25,000 times faster than the speed of ...
Astronomy
Aug 19, 2020
35
5845
New research by University of Massachusetts Amherst astronomer Daniel Wang reveals, with unprecedented clarity, details of violent phenomena in the center of our galaxy. The images, published recently in Monthly Notices of ...
Astronomy
May 27, 2021
62
1612
The supermassive black hole at the center of our Milky Way galaxy, Sagittarius A*, is by far the closest such object to us, about 27,000 light-years away. Although it is not nearly so active or luminous as other galactic ...
Astronomy
Jul 12, 2021
100
725
The first confirmed heartbeat of a supermassive black hole is still going strong more than ten years after first being observed.
Astronomy
Jun 9, 2020
17
3110
A new study co-led by researchers in the U.S. and China has pushed back the first-known physical evidence of insect flower pollination to 99 million years ago, during the mid-Cretaceous period.
Archaeology
Nov 11, 2019
0
33321
