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The Mystery of Exoplanets
Transcript of The Mystery of Exoplanets
By Disha Bharj and Zoe Lang
What is an Exoplanet?
The first exoplanet was discovered in 1995
Since 1995 there have been 1728 confirmed exoplanets (as of 7:53 pm, June 4, 2014)
Exoplanets are being discovered every day. In fact, a new possibly habitable exoplanet called kapteyn b was just confirmed last week!
How do we Detect Exoplanets?
Three "indirect" ways of detecting exoplanets
Majority of exoplanets are detected using radial velocity
Many of the planets we find are somewhat habitable
Why are we Looking for Exoplanets?
How fast is C in miles per hour or km per hour ?
Thanks for Watching!
Disha and Zoe's Presentation
There are many different reasons for each scientist
The main reasons we look for exoplanets is to see if we could possibly live on another planet or to see if there is any extraterrestrial life
The "What's" of Exoplanets
What... type of planet are most exoplanets?
What... kind of stars are exoplanets located around?
What... is the closest exoplanet to Earth?
The beginning of Exoplanets
What exoplanet is closest in size to Earth and how far away is it?
-The exoplanet with the closest size to Earth is Kepler 186f
-Around 490 light years away from Earth
What's the Goldilocks Zone (Habitatble Zone) and what are it's boundaries?
The Goldilocks zone is and area of space in which a planet is just right distance from it's home star.
In miles per hour light speed is alot: 670,616,629 mph. or 1,079,252,848km per hour
"C" stand for the speed of
The habitable zone for the Sun is between approximately 0.63 and 1.15 A.U.
Not too hot or not too cold, so Earth basically fills the bill.
How does the discovery of
water ses on Ganymede affect
our thinking about "habitable
Ganymede is the largest moon in our solar system. This moon as oceans and ice stacked up several layer inside.
This is quite unusual, even though it is so far away from from the Goldilocks zone there can be life there.
This discovery really does change our point of view about the "habitable zone"
How can we calculate the
composition of the atmosphere
of an exoplanet?
The first rocky exoplanet which was discovered, in order to find the the composition they can see how the planet looks.
If it has water that means that there can
rain there. Therefore the atmosphere
must include Hydrogen and Oxygen.
How can we tell the size of an exoplanet?
We can find the size from seeing the light comes from the planet
They can also use a telescope by even indentifing stars that we've already found about which are right next to the planet.
We can find the difference between each and find how big it really is