A new study published by UNLV astrophysicists Rebecca Martin and Mario Livio claimed that there existed super earth that was formed after clearing up all the objects between Sun and Mercury, but unfortunately the sun might have consumed it. The researchers concluded their findings about super-earth after understanding and observing other super-earths found beyond our solar system.
“The only (physical) evidence that super-earths could have formed in our solar system is the lack of anything in that region, not even a rock. So they could have formed there sweeping up all of the solid material, but then later fell into the sun,” wrote Rebecca Martin, lead author and a professor at UNLV in an email to Discovery News, which reported the study on April 14.
The scientists created a hypothesis based on the observation of a super-earth outside our solar system. They concluded that there are two places where super earth could form during the formation of planetary systems. Its formation is basically dependent upon density. While dense super-earths orbited much closer to their stars, the less dense super earth formed away from the planet.
Next, they related their hypothesis with empty space between the Sun and Mercury. They suggested that a super-earth may have formed from the material inside of Mercury’s orbit. The temperature of the cooling protoplanetary disc gave the possibility to the emergence of super earth.
Martin and Livio assumed that the temperature would have been cool enough as the Sun ate the large planet.
According to Martin, enough cool temperatures at the disc make migration timescale for super-earth to fall into the Sun short enough for this to happen in the lifetime of the disc.