Saturday, December 03, 2022

A galaxy diagram is provided by a star mapper. The European Space Agency’s Gaia spacecraft has now mapped nearly 2 billion stars in the Milky Way,

A galaxy diagram is provided by a star mapper.
The European Space Agency’s Gaia spacecraft has now mapped nearly 2 billion stars in the Milky Way, recording their locations, motions, temperatures and other information, allowing scientists to trace the galaxy’s structure and evolution. has been found. Last Monday, operators released the third massive data set, which included a catalog of 800,000 binary stars, 10 million variable stars, and 156,000 asteroids and rocky objects within the Solar System. Gaia, which was launched in 2013, has already discovered new neighboring satellite galaxies, fast-moving stars exiting the Milky Way, and evidence of previous galaxies merging with us.

New data shows thousands of stars are being hurt by giant, violent waves. And, for the first time, the data also includes spectra — the breakdown of starlight — that point to chemical compositions. Stars create heavy elements and scatter them when they explode; The elements are absorbed by the stars of later generations. Mapping that information shows that the abundance of heavy elements is highest in the central disk of the Galaxy, where stars rapidly live and die young.

Dust grains hit the Webb Space Telescope
The agency said last week that a mirror section of NASA’s James Webb Space Telescope was struck by a micrometeoroid last month, causing a “moderately detectable impact” on its data collection. Launched about 6 months ago, the Webb features a 6.5-metre, gold-coated mirror made of 18 hexagonal segments. Mission planners anticipated several splashes of high-speed space dust on Webb during its lifetime and simulated their impact using additional mirror segments. Operators recorded four minor attacks during the deployment and commissioning phase of Web. NASA estimated that the spot it struck in May was larger, but less than 0.1 millimeters wide. The telescope is designed to withstand multiple such hits, and engineers have already adjusted the size and position of the affected mirror segment to minimize distortion from damage; NASA says the telescope’s performance still exceeds all mission requirements.

America provided funds for Russia’s work
The US government said last week that it would not fund new collaborations with research institutes affiliated with Russia’s government and individuals working in those institutions, in response to Russia’s February 24 invasion of Ukraine. The June 11 announcement comes months after several European countries moved forward, halting existing cooperation. US policy allows existing joint projects to continue until completion. Some US institutions have already voluntarily canceled existing collaborations with Russian universities; For example, in February the Massachusetts Institute of Technology pulled out of one with the Skolkovo Institute of Science and Technology, which MIT had helped found.

News Summary:

  • The Webb telescope rang and the US-Russian investigation was called off.
  • Check out all the news and articles from the latest space news updates.
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