TESS, Spitzer Missions Discover a Unique Young World
NASA’s Transiting Exoplanet Survey Satellite (TESS) and retired Spitzer Space Telescope have found a young Neptune-size world orbiting AU Microscopii, a cool, nearby M-type red dwarf star surrounded by a vast disk of debris. The discovery makes the system a touchstone for understanding how stars and planets form and evolve.
Credit: NASA’s Goddard Space Flight Center
Watch this video on the NASA Goddard YouTube channel.
Music: "Web Of Intrigue" from Universal Production Music.
Complete transcript available.
For more than a decade, astronomers have searched for planets orbiting AU Microscopii, a nearby star still surrounded by a disk of debris left over from its formation. Now scientists using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and retired Spitzer Space Telescope report the discovery of a planet about as large as Neptune that circles the young star in just over a week.
The system, known as AU Mic for short, provides a one-of-kind laboratory for studying how planets and their atmospheres form, evolve and interact with their stars.
AU Mic is a M-type red dwarf star at least 150 times younger than our Sun. It’s so young that a vast disk of dust and icy grains still surrounds it.
The planet, AU Mic b, orbits very close to its star within a central zone where the disk material is cleared away. It's around 8% larger than Neptune, with no more than about 3.4 times its mass.
Dos telescopios espaciales de la NASA, el Satélite de Sondeo de Exoplanetas en Tránsito (TESS, por sus siglas en inglés) y el recientemente retirado Telescopio Espacial Spitzer, han encontrado un mundo joven del tamaño de Neptuno que orbita AU Microscopii, una estrella enana fría cercana de tipo espectral M que está rodeada por un vasto disco de escombros. El descubrimiento hace del sistema un referente para nuestra comprensión de cómo se forman y evolucionan las estrellas y los planetas.
Crédito: Centro de Vuelo Espacial Goddard de la NASA.
Una transcripción completa está disponible.
Illustration depicting an approach to AU Mic, flying through its debris disk, and arriving at AU Mic b.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
Illustration depicting one interpretation of AU Mic b.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
Illustration depicting one interpretation of planet AU Mic b.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
Illustration depicting AU Mic, an M-type red dwarf star at least 150 times younger than our Sun. The dark areas represent huge sunspot-like regions that helped complicate the search for planets.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
Illustration depicting the AU Mic system.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
This movie illustrates AU Mic's complex light curve and how scientists filtered out the effects of flares and star spots to discover the transit of AU Mic b.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
High-resolution still illustrating one interpretation of planet AU Mic b.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
Animated GIF illustrating one interpretation of planet AU Mic b.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
Animated GIF illustrating one interpretation of planet AU Mic b and its host star. A version without graphics is included.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
Animated GIF illustrating the AU Mic system.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
Animated GIF illustrating how scientists filtered out the effects of the host star's flares and star spots to discover AU Mic b's transit.
Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA)
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Credits
Please give credit for this item to:
NASA's Goddard Space Flight Center
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Producer
- Chris Smith (USRA)
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Animator
- Chris Smith (USRA)
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Science writer
- Francis Reddy (University of Maryland College Park)
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Scientist
- Tom Barclay (UMBC)
Release date
This page was originally published on Wednesday, June 24, 2020.
This page was last updated on Wednesday, May 3, 2023 at 1:44 PM EDT.