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Astronomers May Have Found Habitable Planet Near Hottest Star
Confirmed
In Short: Astronomers may have discovered a giant planet in the habitable zone of the hottest star yet, HD 156295.
Astronomers have potentially found a giant planet in the habitable zone of the hottest star yet, HD 156295, a milestone in the search for extraterrestrial life.
The star, HD 156295, is a massive A-type star, nine times brighter than the Sun and about 140 light-years away.
The discovery was made using NASA's Transiting Exoplanet Survey Satellite (TESS), which observed nearly 16,500 Delta Scuti stars.
Delta Scuti stars are known for their regular pulsations in brightness, making them useful for precise measurements.
The team used a detection method called pulsation timing, which measures variations in the star's light to detect potential planets.
If confirmed, this would be the first known exoplanet in the habitable zone of a massive A-type star.
The potential planet, HD 156295 b, is estimated to be six times larger than Jupiter and orbits its star at a distance approximately four times that of Earth from the Sun.
The star HD 156295 is extremely hot, with a surface temperature of about 7,500 degrees Celsius (13,500 degrees Fahrenheit).
Despite its intense heat, the star's habitable zone could theoretically allow for the existence of liquid water.
The researchers narrowed down their selection to nine star systems, one of which hosts the exoplanet candidate HD 156295 b.
This discovery is significant as it expands the search for habitable planets to hotter stars, which are less commonly studied.
The European Space Agency's PLATO observatory will soon offer improved precision in its mission to view over 200,000 stars, potentially leading to more discoveries.
What this adds
The new report adds details on the detection method and the star's characteristics, expanding on prior WarpBeat coverage.
The sources have not established the exact conditions on the planet or confirmed its habitability.
Background
Astronomers have potentially discovered a planet in the habitable zone of the hottest star yet, a milestone in the search for extraterrestrial life. The star, HD 156295, is a massive A-type star, nine times brighter than the Sun and about 140 light-years away.
What's confirmed
- Astronomers have potentially found a giant planet in the habitable zone of the hottest star yet, HD 156295, a milestone in the search for extraterrestrial life.
- The star, HD 156295, is a massive A-type star, nine times brighter than the Sun and about 140 light-years away.
- The discovery was made using NASA's Transiting Exoplanet Survey Satellite (TESS), which observed nearly 16,500 Delta Scuti stars.
- Delta Scuti stars are known for their regular pulsations in brightness, making them useful for precise measurements.
- The team used a detection method called pulsation timing, which measures variations in the star's light to detect potential planets.
- If confirmed, this would be the first known exoplanet in the habitable zone of a massive A-type star.
- The potential planet, HD 156295 b, is estimated to be six times larger than Jupiter and orbits its star at a distance approximately four times that of Earth from the Sun.
- The star HD 156295 is extremely hot, with a surface temperature of about 7,500 degrees Celsius (13,500 degrees Fahrenheit).
- Despite its intense heat, the star's habitable zone could theoretically allow for the existence of liquid water.
- The researchers narrowed down their selection to nine star systems, one of which hosts the exoplanet candidate HD 156295 b.
- This discovery is significant as it expands the search for habitable planets to hotter stars, which are less commonly studied.
- The European Space Agency's PLATO observatory will soon offer improved precision in its mission to view over 200,000 stars, potentially leading to more discoveries.
What's still developing
- For perspective, there's a dearth of discovered exoplanets around A-type stars.
- And at only 700 million years young, this system is just getting started.
- Detecting planets outside of our Solar System mostly relies on measuring minute changes in the light of distant stars.
- If this were akin to finding a needle in a haystack, astronomers would delight.
- The cosmos served us an infomercial-style BOGO on this specific star because it's also a Delta Scuti variable, meaning it pulsates in brightness so regularly that it doubles as a 'cosmic clock'.
- Astronomers broke major ground in their hunt for new worlds after potentially locating a giant, habitable planet near the hottest star ever discovered.
- The star in question, dubbed HD 156295, is notably hotter than the Sun on its surface, which burns at a face-melting 13,500 degrees Fahrenheit compared to around 10,000 F for our solar star, Science Alert reported.
- To find this potential exoplanet — a world that is situated outside our solar system — the team had to conduct a serious star search.
- They reportedly pored over 16,500 such Delta Scuti stars — a stellar body that pulsates in brightness like a cosmic metronome — using NASA’s Transiting Exoplanet Survey Satellite (TESS), which helps scan the cosmos for these intergalactic entities.