European Satellite Detects Star Headed for Our Solar System
The gravitational influence of stars that pass near the Oort Cloud could perturb the paths of comets residing there, jolting them onto orbits that bring them in to the inner Solar System.
While this is thought to be responsible for some of the comets that appear in our skies every hundred to thousand years, it also has the potential to put comets on a collision course with Earth or other planet
Tracking stellar motions
A view of a small part of the sky as if you were staring at a star (centre) approaching nearly head on, and then as it passes by and away again.
The motion can be likened to what an observer standing beside a road would see looking at an approaching car, and then swinging around to continue to follow it as it moves away. As a result, the objects in the background – in this case distant stars – become blurred as you move quickly to maintain a visual on the passing object.
The focus of this animation is the star known as Gliese 710. It will have a close encounter with our Sun in 1.3 million years, passing within the Oort Cloud reservoir of comets in the outskirts of our Solar System. The star is predicted to pass within about 2.3 trillion kilometres, the equivalent of about 16 000 Earth–Sun distances. The star’s motion is set against a background of other moving stars and the visualisation covers, very quickly, the timeframe from about 1.1–1.5 million years in the future.
By combining the new results with existing information, astronomers began a detailed, large-scale search for stars passing close to our Sun.
So far, the motions relative to the Sun of more than 300 000 stars have been traced through the Galaxy and their closest approach determined for up to five million years in the past and future.
Of them, 97 stars were found that will pass within 150 trillion kilometres, while 16 come within about 60 trillion km.
The star is already well-documented, and thanks to the Gaia data, the estimated encounter distance has recently been revised. Previously, there was a 90% degree of certainty that it would come within 3.1–13.6 trillion kilometres. Now, the more accurate data suggest that it will come within 1.5–3.2 trillion km, with 2.3 trillion km most likely.
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Whistler Blowers, Insiders
Wow, a million years from now? I can hardly wait huh?
Nibiru confirmed!
Zero impact for us, we’ll all be dead. How fun!