Shulou(Shulou.com)11/24 Report--

CTOnews.com, September 30 (Xinhua)-- NASA made history this week when its DART spacecraft successfully hit an asteroid called Dimorphos nearly 7 million miles away in an attempt to change the asteroid's orbit by kinetic energy impact, the first test in the world designed to protect the Earth from the threat of an asteroid impact.

Previously, NASA shared some images of the impact, and now James Weber and the Hubble Space Telescope have also captured the planetary defense test from a distance, although the images do not look as amazing as the galaxies they have photographed before. but these pictures can reveal a lot of valuable information.

This is the first time that Hubble and James-Webb telescopes have observed the same celestial target at the same time, and NASA says the data they capture will help researchers learn more about the history and composition of the solar system. They will be able to use this information to understand the surface of Demofus (about asteroids), how much material was ejected after DART hit it, and how fast it was.

James Weber and Hubble collected different wavelengths of light (infrared and visible light, respectively), and NASA said being able to observe data from multiple wavelengths would help scientists figure out whether large chunks of matter had been knocked off Demofus's surface, and whether crashing a spacecraft into an asteroid would change its orbit.

According to NASA's preliminary findings, the brightness of the asteroid tripled after the impact, a level that lasted at least eight hours. Hubble took 45 images immediately before and after the DART impact and will make 10 more observations of the asteroid system in the coming weeks.

CTOnews.com learned that the object chosen by NASA was a "double asteroid" system, which was 160m in diameter and revolved around another asteroid 780m in diameter, about 1km apart.

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