The Curiosity rover, which is designed to explore Mars, has found an ancient oasis on Mars. Researchers working with the Curiosity rover have found salt-enriched…
NASA’s Chandra X-ray Observatory captured how behaves the hot gas in the cluster Abell 2052 in X-ray (blue) range. The hot, X-ray bright gas has an average temperature of about 30 million degrees. Like wine in a glass, vast clouds of hot gas are sloshing back and forth in Abell 2052. A galaxy cluster Abell 2052 located about 480 million light years from Earth. A huge spiral structure in the hot gas, spanning almost a million light years, is seen around the outside of the image, surrounding a giant elliptical galaxy at the center. As the smaller cluster approached, the dense hot gas of the central cluster was attracted to it by gravity. After the smaller cluster passed the cluster core, the direction of motion of the cluster gas reversed and it traveled back towards the cluster center.
The cluster gas moved through the center again and “sloshed” back and forth, similar to wine sloshing in a glass that was jerked sideways. The sides of the glass push the wine back to the center, whereas in the cluster the gravitational force of the matter in the clusters pulls it back. The sloshing gas ended up in a spiral pattern because the collision between the two clusters was off-center. This type of sloshing in Abell 2052 has important physical implications.It helps push some of the more dense, cooler gas located in the center of the cluster, where temperatures are only about 10 million degrees, farther away from the core. This helps prevent further cooling of this gas in the core and could limit the amount of new stars being formed in the central galaxy. Sloshing motions like those seen in Abell 2052 also redistribute heavy elements, like iron and oxygen, which are forged in supernova explosions. These elements are used in the future generations of stars and planets and are necessary for life as we know it.
Asteroid 2011 AG5 Could Pose Threat to Earth
Katie Bouman Made the First Black Hole Image
Astronauts May Grow Beans in Space in 2021
Mars Will Be Maximum Closer to Earth
If Life Ever Existed on Mars Most Likely Below Planet Surface
NASAs Calipso satellite
Astronomers Photographed A Galaxy on Verge of Collision
AstroDrone - new iPhone app from The European Space Agency