Image: NASA Ames/SETI Institute/JPL-Caltech.
Joel Kontinen
Astronomers have discovered more than 4,000
exoplanets, or planets outside our solar system, so far. even the planet that
most resembled the Earth, is not habitable,
For example, planet KELT-9b is so hot that its
atmosphere is constantly melting. The darkest known planet, TrES-2b, has an atmospheric temperature of 980
degrees Celsius or1,800 degrees Fahrenheit. On the other end of the
inhospitable spectrum is GJ 433 d, whose discoverers described it as the coldest Neptune-like planet ever
discovered.
However, according to evolutionists, at least two
dozen planets outside the solar system might be better for life than Earth,
These planets are just a
little older, a little wetter, a little warmer and a little larger than Earth
is, researchers wrote Sept. 18 in the journal Astrobiology. All of these factors could
mean that some of these planets are the best places to search for
extraterrestrial life.
"We have to focus on
certain planets that have the most promising conditions for complex life.
However, we have to be careful to not get stuck looking for a second Earth
because there could be planets that might be more suitable for life than
ours," University of Washington astrobiologist Dirk Schulze-Makuch said .
A better version of Earth
might also have a slightly larger moon, or a moon slightly closer to the planet, which would help stabilize its orbit
and prevent life-disrupting wobbles, the researchers wrote.
The researchers
came up with a set of parameters to use to meet all these criteria. According
to them, the perfect superhabitable
planet would be in orbit around a K dwarf star, which is a relatively small
star star that’s slightly cooler than our sun (which is considered a yellow
dwarf); about 5 billion to 8 billion years old; about 10% larger than Earth; about 9 F (5 C)
warmer than Earth, on average;
moist with an atmosphere that is 25% to 30% oxygen, with scattered land and
water. The perfect planet would also have plate tectonics or a similar
geological process in order to recycle minerals and nutrients through the crust
and to create diverse habitats and topography, and would have a moon between 1%
and 10% of its size orbiting it at a moderate distance.
It's not
possible to evaluate distant exoplanets on all these criteria. There is no way
to calculate an exoplanet's landmass area, for example, much less how it's
distributed.
So, this research
did not come up with “more hospitable than Earth” criteria. Even if a super Earth
was found, life has to be planted there – by God.
Source:
Pappas, Stephanie, 2020. Planets
more hospitable to life than Earth may already have been discovered. Live Science 10 0ctober.