Home / Science / Planets outside our solar system

Planets outside our solar system



planet: TOI-1231 b

Discovery: A planet about 90 light-years from Earth is unusually reminiscent of our planet Neptune. That is a gaseous world with a potentially fertile atmosphere that is ripe for study. Earth is 3 ½ times larger than Earth and warms by Earth’s standard of 134 degrees Fahrenheit (57 degrees Celsius), but astronomers say it is one of the “coolest” small planets comparable to today. And it is in a critical position for its atmospheric elements to be teased by space telescopes.

Important facts: TOI-1231 b orbits a red dwarf star. which is smaller but lasts longer than our sun The circumference of the star is 24 days, but the planet is still relatively cold, although it orbits very close to each other because its star is on the colder side. Although uninhabitable due to its size But the planets could give scientists their first chance to capture a type of “barcode”

; reading of the atmosphere of a mid-temperature Neptune-sized exoplanet. which is a planet orbiting another star This will enable comparisons with similar worlds elsewhere in the galaxy, bringing potential insights into the composition and formation of exoplanets and planetary systems. including our own

Details: A new era in the study of exoplanets is just beginning. As we transition from simple detection of these planets and counting zero exoplanets in each world to analyze their atmospheres. with a technique known as transmission spectroscopy. Scientists should be able to use the Hubble Space Telescope. and soon the James Space Telescope A much more sensitive webb. Capture the starlight passing through the atmosphere of TOI-1231 b. Molecules in this planet’s atmosphere absorb parts of the light from this spectrum. Make a black line that can be read like a barcode. which reveals what gas

The planet’s red dwarfs, although small. But it’s quite bright in the infrared part of the light spectrum. or light beyond the red end of the spectrum that is not visible to the naked eye, however, it is suitable for inspection by Hubble and Webb. Also useful: From our perspective on Earth, TOI-1231 b crosses the face of its star. This allows early detection by NASA’s Exoplanet Survey Satellite (TESS), and the so-called “passing” takes almost 3 ½ hours, ample time to capture and analyze the starlight that is present. shining through the planet’s atmosphere

Things to know: We may see evidence of clouds. (perhaps made of water) in the atmosphere of this planet. And because this star and planetary system moves at high speed away from Earth, Hydrogen atoms escaping from the planet’s atmosphere may be detected immediately. In other words, planets can become tails.

in general Such atoms are almost undetectable even when using space facilities. Their presence is masked by the Earth’s outer atmosphere and by interstellar gas, but the TOI-1231 system moves so fast that the ejected hydrogen atoms are switched out of phase by blocking material. which they can be detected by telescopes like Hubble.

Discoverer: Using data from TESS, a large international team of astronomers led by Dr. Jennifer Burt, an exoplanet researcher at NASA’s Jet Propulsion Laboratory in Southern California. and Professor Diana Dragomir, an exoplanet researcher at the University of New Mexico. The discovery of TOI-1231 b was announced in a new paper. The discovery was recorded in NASA’s Exoplanet Archive on June 3.


Source link