00:00Scientists think that the early solar system was a chaotic place, with planetesimals, asteroids,
00:07and comets colliding and bombarding Earth, the Moon, and other inner planets. Now, NASA's Hubble
00:14Space Telescope has captured something similar happening in another planetary system around the
00:19star Fomalhaut. Astronomers spotted a new point of light in an exoplanetary system that wasn't
00:26there in earlier Hubble images. This new observation suggests a violent collision between two large
00:32objects, creating a massive debris cloud, something we don't see in our solar system today, but was
00:39likely in its past. Fomalhaut, located just 25 light years from Earth, is one of the brightest
00:45stars in the night sky. It's larger and brighter than the sun and surrounded by several rings of
00:52dusty debris. In 2008, Hubble detected what seemed to be an exoplanet, Fomalhaut b, the
00:59first discovered in visible light. However, it faded over time, leading scientists to conclude that it
01:06was a dust cloud from colliding planetesimals. While searching for it in recent Hubble images,
01:12they found another unexpected point of light in a similar spot. They named the original object
01:17CS1 and a new one, CS2. Collisions like these play a key role in shaping planetary systems,
01:26but they're rare and hard to study. This discovery gives astronomers a unique chance to estimate both
01:32the size and number of colliding objects in Fomalhaut's debris disk, something that's nearly impossible to
01:38do otherwise. They estimate the objects that formed CS1 and CS2 were about 18 miles, with roughly 300
01:47million similar bodies orbiting in the system. Using Hubble, astronomers will monitor CS2 over the next
01:55three years to see if it fades or brightens. The team also hopes to use NASA's James Webb Space Telescope
02:02to extend their observations into longer infrared wavelengths of light, complementing the visible
02:07wavelengths of their Hubble data. Multi-spectral observations of the Fomalhaut system would provide
02:13a more complete picture of its rapid evolution, giving astronomers a rare opportunity to study how
02:19colliding planetesimals behave while revealing insights into their composition and formation.
02:25This research also offers hints of what our own solar system was like billions of years ago.
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