What is in the sky?
Hubble and the Universe
Cosmic Microwave Background
I love STARS<3
MISC
100
A low mass star goes through several stages of life from birth to death. What is the first stage of a star?
What is a protostar?
100
What two quantities did Edwin Hubble plot against each other to discover the expansion of the Universe?
What are speed and distance?
100
What is the Cosmic Microwave Background?
What is the aftermath of the big bang that left almost uniform radiation that filled the entire universe?
100
protons and electrons fuse to become what star...?
what is a neutron star?
100
Why is the cosmic background radiation visible in all directions?
what is the radiation and temperature is uniform across the universe and therefore the radiation is visible in all directions
200
An object more massive than the Sun, but roughly the size of a city, is a...
What is a neutron star?
200
The expression 1/H0 (where H0 is Hubble's parameter) is known as the
What is Hubble Time?
200
What is Big Bang Nucleosynthesis?
What is the nuclear reaction that happened after 3 minutes after the Big Bang which had created 75% H, 25% He, trace D and Li?
200
What is the maximum mass of a white dwarf star?
what is 1.4 solar masses?
200
What are black dwarfs?
what is a theoretical form of when white dwarf stars eventually do not show significant heat or light?
300
What expression is used to describe the destruction of an object by tidal forces near the event horizon of a black hole?
What is spaghettification?
300
What is Dark energy?
What is the cause of the universe increasingly expanding?
300
What is the current temperature on space?
Hint: in Kelvin
What is 2.7 Kelvin
300
What prevents gravity from shrinking the size of a white dwarf star?
what is electron quantum degeneracy pressure?
300
If star A is 4 times as far away as star B, according to Hubble's law, how much faster is star A than star B?
What is 4 times faster?
400
How long do physicists think it takes for a white dwarf to lose all of its internal heat?
What is several trillion years?
400
When quoting the value of the Hubble parameter H0, astronomers often use the curious unit of km/sec/Mpc. When expressed in simplified form, what is this unit equivalent to?
what is 1/time
400
What is the duration of the Big Bang nucleosynthesis?
What is about 3 minutes?
400
How abundant are black dwarfs in the universe today?
What is none because not enough time has passed for it to form?
400
What is the cosmological redshift?
What is light from distant galaxies being stretched to longer wavelengths as it travels across the expanding universe?
500
The cosmological “horizon” is a limit to observations of the universe caused by “looking out” to …?
what is the beginning of time?
500
Dark matter has an acronym. What is it?
W.I.M.P. which stands for Weakly Interacting Massive Particle
500
What year did the universe cool down and become the cosmic microwave background that we observe today
What is 400,000 years
500
You are in a place that is extremely hot and dense. Around you, nuclear fusion is producing iron "ash". You are in the ...
What is the core of a high-mass star nearing the end of its life?
500
Following this image, which 2 depict a "Big Freeze"
What are A and B?