Astronomers find evidence for a second supermoon beyond our solar system
For the second occasion, scientists have discovered what seems to be a moon orbiting a planet from another solar system. Similar to the first, it has characteristics suggesting that the moons are different from the moons found in the planets in our solar system.
The data gathered from NASA’s Kepler space telescope before when it was shut down in 2018 revealed the existence of moons 2.6 times the size of Earth that orbits an enormous gas giant the size of Jupiter that is 5,700 light-years away in our solar system, in an area that is in The Cygnus as well as the Lyra constellations, scientists announced on Thursday.
A light-year is a length that light travels over in a single year. 5.9 trillion miles (9.5 trillion km). This moon’s size would make it the largest of the approximately 220 moons, which are believed to orbit the solar system’s planets over nine times larger than the moon of Earth.
“We do not know the composition or mass of the object. The possibility is that it’s a rock core that has an envelope of light fluffy material or an incredibly dense atmosphere down to a high-density core,” said by Professor David Kipping.
Our solar system’s moons are icy or rocky objects. Nearly 5,000 planets outside our solar system, known as exoplanets, have been discovered compared to just two moons of this type, referred to as exomoons. This isn’t because moons are believed to be more scarce than other systems of the solar system, but because planets are generally more giant and thus easier to locate, researchers noted.
The first exomoon-related candidate, which was first reported as early as 2018 by those researchers and is still waiting for confirmation, is much larger, roughly the size of the space-based planet Neptune.It’s located around 8000 light-years away from Earth. The gaseous composition of its apparent satellite is different from any of the moons in the solar system.
“Exomoons are incognito terra,” Kipping said, using the Latin word that means unknown land. “We have no information about their existence, their characteristics, or their origins.Moons can be the most frequent home for the universe’s life and could influence the planet’s habitability in its orbit. We’ve learned a lot about exoplanets during the last few years, but exomoons pose a significant problem in modern astronomy.” Kipping added.
The researchers used their “transit method,” often used to find exoplanets. They noticed a decrease in brightness for the star, around which the moon’s orbit revolvesWhen the planet was first spotted, then the exomoon traveled before it. The Kepler telescope has recorded data from two of these transits.