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Badmovies.org Forum  |  Other Topics  |  Off Topic Discussion  |  Weird News Stories  |  Rogue planet on the loose. « previous next »
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Author Topic: Rogue planet on the loose.  (Read 1608 times)
Alex
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« on: October 03, 2020, 07:28:34 AM »

I wonder what the surface of such a world would look like. I would imagine cold and dark.

Quote
Astronomers have spotted something strange and oddly sad: a rogue planet floating freely, without a star.

It’s an example of what astronomers call a “rogue planet.” Some are believed to start as normal planets, but leave their stars after colliding with another object that sends them flying into space like a billiard ball. Other rogue planets may also form when clouds of gas and dust implode to form a planet rather than a star.

“The universe could be teeming with rogue planets and we wouldn’t even know it,” Scott Gaudi, a professor of astronomy at Ohio State University who helped discover the new planet, said in a NASA statement.

The planet spotted by Gaudi and his colleagues turned out to be roughly the mass of Earth or Mars.

What makes planets like it extremely difficult to spot is that they’re very dim, since there are no stars nearby to light them up. That’s why we’ve only spotted a few of these worlds so far.

Making them even more difficult to identify is the fact that they tend to be very cool, meaning that they don’t show up on infrared telescopes.

To spot the latest rogue planet, Gaudi’s team used a new technique called “microlensing,” as detailed in a preprint uploaded to the archive arXiv this week. The technique observes the warping changes the mass has on the fabric of space-time.

Basically, when a rogue planet moves in front of a more distant star, the light from that star bends around the rogue planet from our vantage point as it passes through the warped fabric of space-time near the planet. The more massive the planet, the more extreme the effect.

The team used NASA’s Nancy Grace Roman Space Telescope to spot the lonely planet — a feat that would’ve been impossible without the specialized ‘scope, according to the team behind the discovery.

“The microlensing signal from a rogue planet only lasts between a few hours and a couple of days and then is gone forever,” Matthew Penny, assistant professor of physics and astronomy at Louisiana State University and c0-author of the paper, said in the NASA statement. “This makes them difficult to observe from Earth, even with multiple telescopes. Roman is a game-changer for rogue planet searches.”

Roman is designed to hunt these rogue planets and to see how common they are. Such a discovery could influence the way we understand the formation and evolution of planets.

“We would never find out without undertaking a thorough, space-based microlensing survey like Roman is going to do,” Gaudi added.
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But do you understand That none of this will matter Nothing can take your pain away
pacman000
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« Reply #1 on: October 08, 2020, 01:51:12 PM »

That sounds like a cool name for an old sci-fi novella. What sort of life could exist on a world of eternal night?
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