Some
of these planets look familiar, which is how they get their nicknames. Is it a
surprise that someone has imagined planets similar to actual exoplanets?
HD
188753 is sometimes called
Tatooine. It is a Jupiter-sized planet located 149 light-years away from us… in
a triple star system. One list explained that this meant the planet orbited a
star, which orbited another star, which orbited a third star. They could be
right that HD 188753 is set up this way, but it is not the only configuration
available to 3 stars and 1 planet. How many other configurations can you come
up with?
Whatever
the configuration of this system, the gravitational fields would be complex, so
scientists were surprised to find planets could be created in such a gravity
maelstrom. Dr Maciej Konacki of CalTech feels the view from this planet would
be spectacular, with ‘occasional’ triple sunsets. Yes, that’s possible; it
depends on the distance between the triplet stars. Some ‘companion’ stars are
so far apart that each appears as only a bright point to the other. But this
Tatooine would definitely be hot; it completes an orbit around its star in 3.5
Earth days, so it is snuggled up real close.
CoRoT-7b was the first exoplanet to be dubbed
a ‘Super Earth’. That means it’s a rocky planet, not a gaseous one. Knowing
that other rocky planets exist, scientists can look for potentially habitable
planets that reside in a star’s ‘Goldilocks’ zone.
However,
this particular planet does not look like a pleasant place, as it is tidally
locked to its star, meaning the same side always faces the star, and the
temperature on that face is around 4,000° F. If you want to visit, consider
that it may be the rocky core of a vaporized gas giant where it rains rocks. Be
sure you take a strong umbrella with
you!
Kepler-10b is the first rocky planet discovered
by the Kepler equipment. It is the smallest known exoplanet; an Earth-sized
world that may have a lava ocean on its surface. I love a hot tub, but that’s
too hot.
OGLE-2005-BLG-390 is the first ‘cold super Earth’
exoplanet discovered, nicknamed Hoth. The thought is that it began to
accumulate a Jupiter-like core of rock and ice, but didn’t stop with just a
core. It is 5.5 times the mass of Earth, has a surface temperature of -364°
Fahrenheit, and orbits a red dwarf star some 28,000 light-years away.
Well,
on this trip, we’ve gone from Tatooine to Hoth. Have we gotten all the
‘extremes’ done? I’m not sure. But next week, we’ll start zipping through the
planets that only appeared on 1 list. Bring your seat belt!
http://www.express.co.uk/news/science/643662/The-10-weirdest-planets-to-have-been-discovered-so-far
https://www.nasa.gov/feature/jpl/20-intriguing-exoplanets
www.space.com/159-strangest-alien-planets.html
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