Two planets found by NASA's retired Kepler Space Telescope may be made mostly of water, according to new research.
The two exoplanets , dubbed Kepler-138c and Kepler-138d, orbit a star located about 218 light-years away from Earth in the constellation Lyra.
"We previously thought that planets that were a bit larger than Earth were big balls of metal and rock, like scaled-up versions of Earth, and that's why we called them super-Earths," Björn Benneke, a planetary astrophysicist at the Université de Montréal in Canada and a ...
Call James Cameron: Two Distant Planets Could Be Filled With Water
"We previously thought that planets that were a bit larger than Earth were big balls of metal and rock, like scaled-up versions of Earth, and that's why we called them super-Earths," said Björn Benneke , one of th e study authors, in the ESA release.
Kepler-138c and Kepler-138d are estimated to be approximately three times the size of Earth and double our own planet's mass, but with much lower densitie s.
Twin planets orbiting a distant star may be half water | New Scientist
Both exoplanets orbit a star called Kepler-138 and were found in 2014. The observations at the time hinted that they were fairly different worlds from one another but that they were made largely of rock.
While the star was previously thought to have only three planets, these observations showed evidence of a fourth world. Including that extra planet in simulations of the system revealed that Kepler-138 c and d are far more similar than researchers initially thought.
How to spot 'parade of planets,' visible in Oregon through early January - oregonlive.com
Five planets – Mercury, Venus, Saturn, Jupiter and Mars – will be aligned and visible on clear evenings at dusk through December and early January, says Jim Todd, OMSI's director of space science education. If you have a telescope, you can also spot Pluto, Neptune and Uranus.
Are Planets Tidally Locked to Red Dwarfs Habitable? It's Complicated - Universe Today
Astronomers are keenly interested in red dwarfs and the planets that orbit them. Up to 85% of the stars in the Milky Way could be red dwarfs, and 40% of them might host Earth-like exoplanets in their habitable zones, according to some research.
But there are some problems with their potential habitability. One of those problems is tidal locking.
JWST gets first glimpse of 7-planet system with potentially habitable worlds
The TRAPPIST-1 system, shown in this rendering, includes seven Earth-sized planets circling a single, relatively cool star. Credit: NASA/JPL-Caltech
The James Webb Space Telescope (JWST) has had its first look at a hotly anticipated set of targets — the atmospheres of some of the seven Earth-sized planets circling the star TRAPPIST-1, just 12 parsecs (39 light years) from Earth.
Why Are Some Planets Surrounded by Rings?
By Dr. Rudi Kuhn, South African Astronomical Observatory December 14, 2022 Illustration of Saturn and its rings. All of the outer gas giant planets — Jupiter, Saturn, Neptune, and Uranus — have rings around them.
The biggest difference between the rings of Saturn and the other gas giant planets is that the particles that make up the rings of Saturn are very good at reflecting the light from the sun back towards the Earth.
Star 15 light years away has two Earth-like planets | Boing Boing
The good news: two temperate planets with Earthlike-mass orbit a red dwarf star "only" 15 light years away .
Astronomers have uncovered a pair of planets that are true "water worlds," unlike any planet found in our solar sys… https://t.co/Mkauw7RNPv HubbleTelescope Thu Dec 15 16:05:13 +0000 2022
In 1983, after a few drinks, a pair of astronomers at the University of Tokyo, Hisashi Hirabayashi and Masaki Morim… https://t.co/2LRX6EqYLY abbybeall (from Northumberland ) Thu Dec 15 09:38:38 +0000 2022
Astronomers discover two potentially habitable exo-Earths around a star near the sun @IAC_Astrofisica… https://t.co/Jl2lnGRVnj physorg_com Thu Dec 15 21:51:02 +0000 2022
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