"The other, the first super Earth around a solar twin, is three times the Earth's mass and so close to its star that its orbit takes just three days", the study noted. An global team of scientists led by Jorge Melendez at the University of São Paulo in Brazil has found a massive plant-eating "Death Star" which is nearly akin to Sun in terms of its dimension.
The latest discovery has revealed a new planetary system which has a star which is much similar to our Sun.
Jacob Bean, the co-author of the research and an assistant professor of astronomy and astrophysics at the University of Chicago, said, "While analysing HIP6846, we got some robust and reliable evidence about the presence of the "death star" which is nearly equal to the dimension of Sun".
The team, which included researchers from the University of Chicago, said that unlike the artificial planet-destroying Death Star in the movie "Star Wars", this natural version could provide clues about how planetary systems evolve over time. The study of the star has been described as a sort of post-mortem of the planet formation and planetary evolution process as it is tricky to draw conclusions from a single system to study more stars like this to see whether this is a common outcome.
The unusual and abnormal composition of this newly discovered death star has indicated about the existence of some other such unknown planet in the planetary system. We've identified about 2,000 exoplanets over the course of the last two decades, but it's not common to find ones orbiting stars that resemble our own Sun - when we do, we call them "solar twins", and it's these stars that are most optimal to study. Megan Bedell is also the lead planet discoverer for this joint venture.
In 1995, the scientists had discovered the first planet orbiting a star other than the Sun.
A team of astronomers at the University of São Paulo in Brazil has detected a super-big plant-swallowing "Death Star" which is quite similar to Sun. The most recent discovery, which still needs confirmation, includes two planet candidates-a super Neptune and a super Earth.
Analysis of the particular star's composition has revealed that it contains four times more lithium than what can be expected from a star six billion years old.
Their orbits are surprisingly close to their host star, with one 50 per cent more massive than Neptune and located at a Venus-like distance from its star, researchers said.
HIP68468's composition points to a history of ingesting planets. Thus, they could determine the development of planetary systems. "Other planets could have been ejected from the system - or ingested by their host star", the researchers added. If a cat is seen sitting next to a canary's cage with yellow feathers in its mouth, it is pretty well certain the cat ate the canary. Maybe Earth will be on the chopping block in a billion years.
Analysing solar stars and their links with the planet orbiting them is considered rare.
Bean explained that the Giant Megellan Telescope under construction in Chile, which the University of Chicago is a founding partner, will lend to more discoveries of Earth-like exoplanets around solar twins.