Former OSIRIS-REx Spacecraft Renamed OSIRIS-APEX for New Asteroid Study Mission
The OSIRIS-REx spacecraft, which recently returned with a sample of asteroid Bennu, is now embarking on an exciting new mission. Renamed OSIRIS-APEX, the spacecraft will study asteroid Apophis, taking advantage of its close approach to Earth in April 2029. This will be the closest a known asteroid of its size has ever come to Earth.
Apophis differs from Bennu as it is an “S-type” asteroid, made of silicate materials and nickel-iron. This close encounter with Earth is expected to have a significant impact on Apophis. It could change the asteroid’s orbit and the length of its day, potentially causing surface quakes and landslides.
OSIRIS-APEX aims to study Apophis’ surface and monitor how it changes post-close-approach. This research will provide valuable insights into the formation processes of planets. Additionally, the mission will contribute to planetary defense research, as many potentially hazardous asteroids are also of the “S-type.”
The spacecraft is scheduled to reach Apophis on April 13, 2029, and will remain in its proximity for approximately 18 months. During this time, OSIRIS-APEX will conduct similar investigations to its previous mission. It will map the surface of the asteroid and analyze its composition.
Moreover, OSIRIS-APEX will perform a maneuver to stir up surface rocks and dust in order to study the material below Apophis’ surface. This in-depth analysis will uncover new information about the asteroid’s composition and structure.
Overall, this mission is set to provide groundbreaking insights into our understanding of asteroids and planetary formation. It will raise new questions and further our knowledge of these celestial bodies. Stay tuned for updates on OSIRIS-APEX’s exciting journey as it explores asteroid Apophis.
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