Tuesday, September 27, 2022

DART Hits Dimorphos

Certainly not of the level of technology that Captain Kirk discovered on Miramanee's planet, which was ultimately used to save her planet from doom (that was science fiction of course) but impressive nonetheless was the successful impact of DART – the Double Asteroid Redirect Test on Dimorphos, a small asteroid moon of Didymos. DART struck the little asteroid – hoping to nudge it slightly off-orbit – at 7:14 p.m. ET (23:14 UTC) on Monday, September 26, 2022.

Didymos-B aka Dimorphos

I remember back in the day discussing the unlikelihood of anything that could redirect an asteroid, but here we are, a first test of doing that very thing. Now this asteroid is very, very small compared to the one on that Star Trek Episode (The Paradise Syndrome, which aired Oct 4, 1968) but it is a first ever to test the viability of redirecting an asteroid impact threat to Earth. 

NASA has a number of images and videos of the impact. 

Here is the series of stills taken as DART approaches Dimorphos.

And here is a actual view from the Asteroid Terrestrial-impact Last Alert System (ATLAS): A NASA and University of Hawaii project to patrol the sky every night in search of incoming asteroids as DART hits the asteroid.

EarthSky has a good writeup on the mission. We won't know for sure yet if the mission was a complete success. We need to wait for data to come in on the change in Dimorphos' orbit. 



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