Vets warn aggression is almost TWICE as prevalent in popular dog breed - and those with a GOLDEN coat are.EXCLUSIVE: What happened to the missing passengers of the Titanic? As eerie new photos show shoes left in.From a lobster in a traffic cone to a sea anemone on an Irn Bru can: Shocking photos show how sea creatures.How does YOUR dog measure up? The most aggressive breeds revealed as vets warn golden cocker spaniels have a.See Titanic like NEVER before: First ever full-sized scans of the shipwreck could finally shed light on what.'However, the fact that there is nothing inside of Mercury's orbit may not be a coincidence.' 'So they could have formed there sweeping up all of the solid material, but then later fell into the sun.'ĭr Livio added: The lack of super–Earths in our solar system is somewhat puzzling given that more than half of observed exoplanetary systems contain one. Speaking to Discovery News, Dr Martin said: 'The only evidence that super-Earths could have formed in our solar system is the lack of anything in that region, not even a rock. These super-Earths would instead have swept it all up and carried it with them to their fiery death within the sun. While their work is currently based only on computer modelling, it may help to explain the strange lack of debris and dust between Mercury and Mars. Instead it appears it may once have had at least one, but it was destroyed by falling into the sun (super-Earth Kepler 62f illustrated) Our solar system appears to be unusual due to its lack of super-Earth-sized planets. The researchers said that in the case of our own solar system, a super-Earth could well have formed in the inner part of the primordial material orbiting the sun around 10-100 million years after the solar system formed 4.6 billion years ago. This is an area with a high density of protoplanetary dust but with low levels of turbulence, providing the conditions needed for the material to clump together to form a planet.ĭr Rebecca Martin and Dr Mario Livio, from the University of Nevada, in Las Vegas, used computer modelling and found such dead zones may form within the inner parts of a disk of protoplanetary dust orbiting a star. It is thought that super-Earth exoplanets may form in one of two ways - either far out from the star they orbit and then migrate inwards, or in the position where they are currently seen.įor them to have formed in their current orbit, super-Earths need to build up from debris in an area within the huge disk of gas and rubble around a new star known as the dead zone. In a study published on the online open source site arXiv, a pair of astronomers at the University of Nevada examined a possible mechanism for super-Earth formation in the solar system. This violent 'stripping' occurs in planets that are made up of a rocky core with a gaseous outer layer. Data from the Nasa Kepler space telescope is revealing a class of exoplanets whose atmospheres have been stripped away by their host stars.ĭubbed hot super-Earths, these planets are losing their layers of gas because of blasts of intense radiation that 'cooks' the large stellar bodies.Īccording to a recent study, planets with gaseous atmospheres that lie very close to their host stars are bombarded by a torrent of high-energy radiation.ĭue to their proximity to the star, the heat that the planets suffer means that their 'envelopes' have been blown away by intense radiation.
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