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Everything You Need to Know About 7 Earth-Sized Planets Discovered By NASA

Everything You Need to Know About 7 Earth-Sized Planets Discovered By NASA

The year 2017, will be witnessed as a very pertinent year considering the discovery of a planetary system with a number of Earth-sized planets that could host liquid water and, thus, life.

So, NASA held a press conference announcing the discovery of a solar system that has a host of Earth-sized planets. Three of these are located firmly in the habitable zone, meaning that they very likely have liquid water and could host life.

Here’s everything you need to know about these finds.

REDDIT AMA has the answer of a plethora of queries circling around this novel discovery.

Getting in this solar system

As of now, it is really tedious for any of the current technology to get into the new solar system. Thus, remote investigation of the planet will be pursued by utilizing the space-based telescopes.

Everything You Need to Know About 7 Earth-Sized Planets Discovered By NASAThis illustration shows the possible surface of TRAPPIST-1f, one of the newly discovered planets in the TRAPPIST-1 system. Scientists using the Spitzer Space Telescope and ground-based telescopes have discovered that there are seven Earth-size planets in the system. Credits: NASA/JPL-Caltech

The gravity of the 3 planets which could have water in them

In order to determine the surface gravity, there is required acquaintance pertaining to the radius as well as mass. It is really uncertain at this point of time, to avail knowledge about the mass measurement, but, there is quite a probability that the surface gravity of a number of these planets is same as that on the Earth. The planet f is the exception. It is because it has the similar radius as the Earth, but 68 % that of the mass. This implies that the surface gravity of this planet f will be 68% lower than that of the Earth.

Everything You Need to Know About 7 Earth-Sized Planets Discovered By NASAThe TRAPPIST-1 star, an ultra-cool dwarf, has seven Earth-size planets orbiting it. This artist's concept appeared on the cover of the journal Nature on Feb. 23, 2017. Credits: NASA/JPL-Caltech

If, the NASA does find signs of life on the exoplanets, when will the general announcement to the public be made?

There is not a protocol as yet.

ssc2017-01d_inline-1The TRAPPIST-1 system consists of seven Earth-sized planets orbiting a red dwarf star.Credits: NASA/JPL-Caltech

Is their probability of a new technology in the coming 20-30 years that would be able to see life on the planet in the form of vegetation?

In order to witness vegetation and the like attributes, there will be requirement of future telescopes, more than JWST. JWST has the ability to observe planets pass across their host stars. However, this technique will not be able to see the surface of the exoplanets. In order to pursue it, there will be requirement of future technology which has the ability to block out the light of the star and observe the planets directly.

Everything You Need to Know About 7 Earth-Sized Planets Discovered By NASAThis artist's concept shows what each of the TRAPPIST-1 planets may look like, based on available data about their sizes, masses and orbital distances. Credits: NASA/JPL-Caltech

When will the data for the atmospheric composition of the exoplanets will be published?

The first observation of the novel planets is on the way. As soon as the result passes via the review of scientific peer, it will be possible to share the learning thoughts.

Everything You Need to Know About 7 Earth-Sized Planets Discovered By NASAA comparison of the TRAPPIST-1 system to our solar system. The close orbits of the TRAPPIST-1 planets are reminiscent of Jupiter and its system of orbiting moons. Credits: NASA/JPL-Caltech

Comparison of the Kepler spacecraft with Spitzer spacecraft to detect planets around TRAPPIST-1

Kepler spacecraft has the ability to observe planets for a period of 80 days. It will thus be able to provide information with regards to the time series and gravitational interaction between the planets. Kepler also has the capability to uncover the additional planets which have not been seen by the Spitzer spacecraft.

All Images ©NASA/JPL-Caltech

Everything You Need to Know About 7 Earth-Sized Planets Discovered By NASA
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