Planet hunter

NASA’s unique Planet Hunter Satellite Finds 66 New Planets Outside Our Solar System, 2,000 More ‘Candidates’ Yet To Be Confirmed

GS paper 3

NASA satellite finds 66 new exoplanets, 2,100 more ‘candidates’ During its two-year-long primary mission, NASA’s planet-hunter TESS has found 66 new exoplanets, or worlds beyond our solar system, as well as nearly 2,100 candidates astronomers are working to confirm, the US space agency has said.

The planet hunter of NASA called the TESS (Transiting Exoplanet Survey Satellite) has found 66 new Exo planets. TESS is Transitioning Exoplanet Survey Satellite. It scanned about 75% of the starry sky during its mission.

Highlights
The planet hunter TESS monitors monitored the sky for about a month using four cameras. The mission has been extended till September 2022. The mission is to further explore along the ecliptic orbit plane of the earth around the sun.

About TESS
TESS is a space telescope for NASA explorer programme designed to search Exoplanets. It searches for Exoplanets covering 400 times larger area as covered by Kepler Mission.

TESS was launched by Falcon Rocket in 2018. TESS has so far identified 1, 835 Exoplanets.

The main objective of TESS Mission is to survey the brightest stars near the earth. It uses an array of wide-field cameras that covers 85% of the sky. The earlier mission such as KEPLER focused on planets around distant stars. TESS focuses on planets around nearby stars

Kepler Mission
The Kepler Mission was launched by NASA to survey Milky Way Galaxy. It was mainly focused on discovering hundreds of Earth-like small planets.
The mission focused on the following

To determine terrestrial and larger planets
To determine shapes and sizes of orbits of these planets
The estimate the planets in star systems
To determine sizes, densities and masses of giant planets
To determine properties of stars in planetary systems.
India’s Exoplanet Search Mission
PARAS is India’s Exoplanet search mission. PARAS is PRL Advanced Radial-velocity Abu-sky Search. It is ground-based exoplanet search device. It is located at Mt Abu. It works at a resolution of 67,000. PARAS has achieved RV accuracy of 1.3 m/sec. PARAS works on bright sun like quiet stars. It uses Thorium-Argon lamp for calibration. It is capable of detecting planets around M-type stars.

M-Type Stars
Around 76% of stars in the solar system are M-type stars. They have low luminosities.

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