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Nevilledog

(51,109 posts)
Sun Jul 26, 2020, 01:09 PM Jul 2020

Scientists reveal first-ever photo of a solar system like ours

https://www.cbsnews.com/news/scientists-reveal-first-ever-photo-of-a-solar-system-like-ours/

Scientists have captured the first direct image of a solar system that closely resembles our own. The new image is a family portrait of sorts, showing two giant exoplanets orbiting a young, sun-like star, roughly 300 light years away.

The picture was taken using the European Southern Observatory's Very Large Telescope, located in Chile's Atacama Desert. According to a new study in the Astrophysical Journal Letters, the system will help astronomers better understand how our solar system formed and evolved

The star, known as TYC 8998-760-1 and located in the Southern constellation of Musca, is only 17 million years old, which researchers called a "very young version of our own sun." Comparatively, the sun is roughly 4.6 billion years old.

Both planets orbiting the star, dubbed TYC 8998-760-1b and TYC 8998-760-1c, are suspected to be gas giants, meaning they are composed primarily of gases like helium and hydrogen. However, they are much further away from their host star than our gas giants Jupiter and Saturn, at distances of 160 and about 320 times the Earth-sun distance. They are also much heavier than the gas giants in our solar system.

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Scientists reveal first-ever photo of a solar system like ours (Original Post) Nevilledog Jul 2020 OP
How is this system much like ours except for the gas giants? triron Jul 2020 #1
From the Article: Decoy of Fenris Jul 2020 #2
OK but not enough resolution yet to determine that it is "much like ours". triron Jul 2020 #4
It's a clickbait title Igel Jul 2020 #5
Then they realized TlalocW Jul 2020 #3
 

Decoy of Fenris

(1,954 posts)
2. From the Article:
Sun Jul 26, 2020, 01:21 PM
Jul 2020

"It marks the first time astronomers have observed more than a single planet orbiting a star similar to the sun. Only two similar systems have ever been previously observed — both with stars uniquely different to ours."

It's still fairly different, but this system is (probably) the closest to Sol system in terms of general design that we've directly observed.

Igel

(35,317 posts)
5. It's a clickbait title
Sun Jul 26, 2020, 02:43 PM
Jul 2020

With real science lurking someplace.

It's similar in that there's the first actual picture of a planetary system that's fully formed. Unlike, say, Beta Pictoris with a protoplanetary disk and dark rings showing planetary formation. It shows approximate age at which fully formed planets exist.

On the other hand, it's unlike the Sol system in most other ways. Super-Jupiters at far greater distances. It all begs the question as to how they got there--what was the protoplanetary disk for that system like, if planets formed an order of magnitude larger and more than 100 AU away from the star than the Kuiper Belt is from the Sun? Conversely, how much mass did they need to hurl around and harvest kinetic energy from to get pushed out to those orbits? (And just what is the eccentricity of those orbits?)

Or perhaps it's an entirely different formation mechanism, where the molecular cloud didn't collapse to a single place forming a protoplanetary disk but instead had competing gravitational centers, one of which became the star and the others became small brown dwarfs illuminated or new enough to be visible.

TlalocW

(15,383 posts)
3. Then they realized
Sun Jul 26, 2020, 01:22 PM
Jul 2020

That the camera on the satellite that had left our solar system was pointing back at it/us. "Oops," said NASA in an official statement. "Our bad."

TlalocW

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