HD 21749b , a newly discovered planet by NASA


The National Aeronautics and Space Administration (NASA) of USA has discovered a new planet. It is the third new planet discovered by the NASA mission. Transiting Exoplanet Survey Satellite (TESS).

HD 21749b- New Planet :

The new planet HD 21749b is outside our solar system and orbits a dwarf star 53 light years away. HD 21749b orbits a bright star in the constellation Reticulum. It has the longest orbital period of all the three discoveries made by TESS. HD 21749b orbits its star in a relatively leisurely 36 days.

The other two discoveries made by the TESS probe are Pi Mensae b and LHS 3844b. Pi Mensae b has an orbit of 6.3 days and LHS 3844b has an orbit of just 11 hours.

TESS Mission :

The Transiting Exoplanet Survey Satellite (TESS) mission of NASA is an explorer mission which is undertaking an all-sky survey to search for planets transiting nearby stars. The objective of the TESS mission is to discover planets smaller than Neptune that transit stars bright enough to enable follow-up spectroscopic observations that can provide planet masses and atmospheric compositions.