Types/Shapes & Naming Of Our Galaxy
How do scientists characterize a galaxy?
Based on their shape and physical features
In 2019, astronomers discovered a white dwarf system that emitted a strange mixture of gasses indicating a condition similar to Neptune. What did this discovery prove?
This discovery provided major evidence to the theory that dead stars can host planets, or at least temporarily.
Where and how far away from Earth was the first black hole discovered?
HALF POINTS FOR HALF CORRECT ANSWER
The black hole was discovered in the center of the M87 galaxy, which is 55 million light years away from Earth
What category of galaxy did Carl Seyfert identify, and when?
He identified Seyfert Galaxies in 1943
Sprites and Elves
Which are the three different kinds of black holes?
BONUS 25 POINTS FOR EVERY DESCRIPTION OF THE DIFFERENT BLACK HOLES
Stellar Black Holes- 5 to 10 times bigger than our sun, collateral from a supernova explosion
Supermassive Black Holes- Largest kind of black hole, hundreds of thousands, even millions of billions times larger than our sun
Intermediate Black Holes- Hundreds to hundred thousand times bigger than the sun, larger than stellar but smaller than supermassive, can be found in our Milky Way
This galaxy has a miniscule gas and dust content, loose orbiting system, and contains a disc. What kind of galaxy is it?
Elliptical Galaxy
When detecting exoplanets, astronomers usually use the dips in a star's optical brightness to do the job, but a different method was used when discovering M51-ULS-1b. What did astronomers detect instead?
X-ray brightness
Who came up with the theory and evidence, respectively, of dark matter?
HALF POINTS FOR HALF CORRECT ANSWER
Fritz Zwicky came up with the theory of dark matter in 1933, while Vera Rubin came up with the evidence to support his claim in the 1970s
This feature, common to spiral galaxies, refers to the cloud of stars surrounding the galaxy, giving them their distinct appearance. What is being referred to?
The halo
Explain one of the reasons the solar eclipse is so rare.
BONUS 25 POINTS FOR EACH ADDITIONAL REASON
The moon's orbit is tilted 5 degrees to the Earth's orbit around the Sun, which isn't usually the case.
The distance and size of the sun and moon.
The elliptical orbit of the moon, and fluctuations in distance between the sun and the moon.
Why is it difficult to locate dark matter?
Dark matter is hard to find because dark matter can’t reflect, absorb, or emit light, meaning our current technology will not be able to find any of this substance around us.