NASA in search for 'signatures of life' | Exploring started by new planet hunter

Harsh Kukreja Date : 267
TESS is searching for life
A new NASA's program scan the universe to find thousands of planets orbiting stars outside our solar system.
Is there life on any of those planets ? Everyone have question mark in their mind about it.
The Planet hunter named TESS (Transiting Exoplanet Survey Satellite) --is one of its most important missions,says astrophysicist Hakeem Oluseyi.He Said "TESS will discover planets around the nearest brightest stars seen from Earth"
We know there were nine planets in our solar system, but the scientists cut  Pluto off the list.Many planet lover wonder what happened to Pluto.
Now many of us know that Pluto is still a planet and considered a dwarf planet.
Beyond the planets in the Kuiper belt, though, scientists hope TESS will find more planets. NASA astronomers have already discovered thousands of exoplanets.
But TESS -- the first ever spaceborne, all-sky transit survey will identify a wide range of planets, from Earth-sized to gas giants.
Oluseyi said TESS has that capability because of the physics of shadows and light.
"Light passing through the planets' atmospheres, or bouncing off their atmospheres, will provide details of the planets' chemistry and search for signatures of life", he said.
So when a planet passes in front of its host star, the light will dim, Oluseyi said, and that's what TESS will be looking for -- those dimming lights that astronomers call dips transits.
 What would be the dream discovery for TESS?
An Earth-sized planet that has survived the life cycle of the star it orbits and is orbiting a white star. It's an elusive discovery for astronomers.
TESS is expected to find thousands of other planets during its two-year mission exploring the nearest and brightest stars in our galaxy to see if there are unknown worlds hiding in their light.
TESS is scheduled to launch on a SpaceX Falcon 9 rocket from Cape Canaveral Monday at 6:32 p.m. ET.

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