Lördag 22 JAN 2017
Just nu så har jag en uppgift i Engelska som handlar om att presentera sitt eget material. Så vi skulle välja en text på minst 300 ord som vi på ett effektivt sätt ska presentera. För ett A ska man presentera den på ett effektiv sätt genom att läsa upp den med en kritisk syn. Så jag har sammanfattat texten men inte lagt in någon åsikt. För hur har du en åsikt om en planet? Min lärare fick läsa igenom den, samt min kompis men jag känner ändå inte att jag har fått till den riktigt. MEN samtidigt känner jag mig ändå rätt nöjd över den. Så här är den!
Space.com published an article about a new planet appearing in the milky way galaxy. The planet got nicknamed Planet Nine and it is located beyond Pluto’s orbit.
The lead author James Vesper said during a conference (QUOTE) “It is very plausible” that Planet Nine is a captured rouge planet – a world that cruises trough space unattached to a star.
Computer simulations performed by Vesper and his mentor Paul Mason shows 156 encounters between solar systems and rouge planets of various sizes and trajectories. Trajectory and orbit both refer to the path of a body in space.
These encounters might not be as unusual as we might think, some studies indicate that rouge planets outnumber normal worlds. According to the simulations 60% shows that the rouge planets coming in will be flung out into space. Vesper says that most of the time it is relatively simple (QUOTE) “rouge in, rouge out.”
But when that don’t happen, 10% of the rouge planets would take one of the solar systems native planets with it during it’s departure.
In 40% of the cases the planet would be captured in the solar system and stay there. What happens of course depends on the planets characteristics.
Our solar system has probably not had any encounter with a bigger rouge planet than Neptune. According to Vesper such a big planet would have stirred up the inner solar system but it remains intact.
Neptune is 7 times more massive than Planet Nine is thought to be. Planet Nine in turn is 10 times more massive than Earth.
Two astronomers, Konstantin Batygin and Mike Brown found further evidence for such a planet in the orbits of several additional bodies in the outer solar system. Planet Nine is calculated to possess an elliptical orbit that makes the furthest distance from the sun 1000 astronomical units (AU). One AU is the distance between the sun and Earth which is 150 million kilometres.
Vesper stresses that the results from a new simulation do not prove anything about the hypothetical origin of this world. So astronomers have yet to confirm the existence of the planet. Some studies have deemed the rouge planet explanation unlikely. They instead suggest that planet nine is a native of the solar system or that our sun ripped the world away from another star during a close stellar encounter.