The First-Ever Image Of Multiple Planets Orbiting a Sun-Like Star Unveiled

By

CCSS NAS-4
ESO's Very Large Telescope (VLT) at the Paranal Observatory in Chile captured the first-ever photo of multiple planets orbiting a Sun-like star (Credit: ESO/J. Girard / CC By-SA-4.0 Creativecommons.org)

While astronomers have discovered evidence of thousands of exoplanets, obtaining direct images of the distant worlds has always been a challenge. That's because the planets tend to huddle close to the star they orbit and often get concealed by their star's dazzling light. Of the handful of images captured, most are of a single planet orbiting a Sun-like star. The only two multi-planet systems photographed feature brown dwarfs, or "failed stars," which are radically different in nature from the Sun. Now, an international team of scientists may have finally captured a young, Sun-like star with two giant Jupiter and Saturn-like planets in orbit.

"Even though astronomers have indirectly detected thousands of planets in our galaxy, only a tiny fraction of these exoplanets have been directly imaged," says study co-author Matthew Kenworthy, associate professor at Netherlands' Leiden University. "Direct observations are important in the search for environments that can support life."

The TYC 8998-760-1 star (far left corner) with its two orbiting planets (Credit: ESO/Bohn et al.)

The photo was captured using the Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE) instrument on the European Southern Observatory's (ESO) Very Large Telescope in the Chilean Atacama Desert. The powerful device is equipped with a coronagraph to block unwanted light from the host star, allowing the astronomers to view the fainter planets nearby and even capture multiple images at different times to identify the planets and isolate them from stars in the background.

The star system, dubbed TYC 8998-760-1, lies 300 light years away from Earth in the constellation Musca, which is only visible from the Earth's Southern Hemisphere. The stunning image features the dazzling parent star in the top left corner, along with its two planets, TYC 8998-760-1 b (center) and TYC 8998-760-1 c (lower right hand). The two worlds orbit their star at about 160 and 320 times the Earth-Sun distance, respectively. In comparison, Jupiter and Saturn have an orbit of about five and ten times the Earth-Sun distance, respectively. The distant worlds are also far denser than our Solar System's gas giants.

The TYC 8998-760-1 star system is located 300 light years away in the constellation Musca (Credit: ESO/Bohn et al.)

The scientists, who published their findings in the Astrophysical Journal Letters on July 22, 2020, believe that TYC 8998-760-1, which is just 17 million years old, could provide valuable insights into the formation of our Solar System. "It's like a very young version of our own Sun," said Alexander Bohn, a Ph.D. student at Leiden University, who led the new research. "This discovery is a snapshot of an environment that is very similar to our Solar System, but at a much earlier stage of its evolution."

The scientists, who plan to continue observing the TYC 8998-760-1 star system using the ESO telescope and other powerful space instruments, are also curious to investigate if the two planets formed in their current locations or steadily migrated away from the star. They also suspect the system has some smaller, less dense planets that are waiting to be discovered.

"The possibility that future instruments, such as those available on the ELT [Extra Large Telescope], will be able to detect even lower-mass planets around this star marks an important milestone in understanding multi-planet systems, with potential implications for the history of our own Solar System," concludes Bohn.

Resources: Forbes.com, ESO.org,

Get the Workbook for this article!

Workbook contains: Article, Reading Comprehension, Critical Thinking Questions, Vocabulary in Context (+ answers), Multiple Choice Quiz (+ answers), Parts of Speech Quiz (+ answers), Vocabulary Game (+ answers)
Cite Article
96 Comments
  • zaraccccc
    zaracccccThursday, October 1, 2020 at 5:55 am
    WOW
    • cm2
      cm2Wednesday, September 23, 2020 at 8:19 am
      WoW
      • confon
        confonWednesday, September 30, 2020 at 8:46 am
        wow in deed
      • ihave10deadcats
        ihave10deadcatsMonday, September 21, 2020 at 11:51 am
        Wow the stuff nature can create and do!
        • bunnie_kitty
          bunnie_kittySunday, September 20, 2020 at 7:44 am
          Its like a miniature version of the solar system! Wowiiiiieeee!
          • alphacloudmike
            alphacloudmikeFriday, September 18, 2020 at 6:21 am
            My. I think so wolfsong. There's something called Planet 9, and only the two most powerful telescope can see it.
            • wolfsong
              wolfsongMonday, September 14, 2020 at 7:48 am
              Do you guys think that since there's another sun-like star, that there's other planets like Earth, with other civilizations?
              • dogogemi
                dogogemiTuesday, September 22, 2020 at 6:03 am
                Imagine if all the stars in the sky equal 1 solar system, that would be trillions of solar systems with who-knows-what?! There are so many chances of life like us in those trillions of galaxies, or be could just be that one-in-a-billion. :O
                • ttatte
                  ttatteMonday, September 21, 2020 at 7:37 am
                  it would be quite near impossible for it to be habitable though...
                  • bunnie_kitty
                    bunnie_kittySunday, September 20, 2020 at 7:42 am
                    Yeah, this is evidence.
                    • ilikeyuhcutg
                      ilikeyuhcutgMonday, September 28, 2020 at 10:40 am
                      No <3
                    • stayweirdlynn
                      stayweirdlynnWednesday, September 16, 2020 at 9:52 am
                      Probably, it is the only explanation that makes sense
                    • c7
                      c7Sunday, September 13, 2020 at 10:18 am
                      Wow🐕
                      • anyas
                        anyasSaturday, September 12, 2020 at 5:55 pm
                        I look so coooooooooool!!
                        • xoxobadgirl
                          xoxobadgirlSaturday, September 12, 2020 at 4:59 pm
                          That's cool
                          • twoface
                            twofaceTuesday, September 8, 2020 at 1:42 pm
                            The small ones look like mercury.