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Space & Earth Science

The latest science news on astronomy, astrobiology, and space exploration from Phys.org.
  1. The ISS's orbit is slowly decaying. While it might seem a permanent fixture in the sky, the orbiting space laboratory is only about 400 km above the planet. There might not be a lot of atmosphere at that altitude. However, there is still some, and interacting with that is gradually slowing the orbital speed of the station, decreasing its orbit, and, eventually, pulling it back to Earth. That is, if we didn't do anything to stop it.
  2. Two NASA rocket missions are taking to the Alaskan skies in hopes of discovering why some auroras flicker, others pulsate, and still others are riddled with holes. Understanding these peculiar features is part of NASA's goal to understand the space environment around our planet, which can affect both spacecraft and astronauts.
  3. When NASA and the Indian Space Research Organization's (ISRO) new Earth satellite NISAR (NASA-ISRO Synthetic Aperture Radar) launches in coming months, it will capture images of Earth's surface so detailed they will show how much small plots of land and ice are moving, down to fractions of an inch.
  4. Astronomers have discovered extremely powerful winds pummeling the equator of WASP-127b, a giant exoplanet. Reaching speeds up to 33,000 km/h, the winds make up the fastest jet stream of its kind ever measured on a planet. The discovery was made using the European Southern Observatory's Very Large Telescope (ESO's VLT) in Chile and provides unique insights into the weather patterns of a distant world.

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