Astro Questions Flashcards
What are the three types of main sequence stars
Massive star
Brown Dwarf
Low mass Star
What does a massive star become when it starts to die
Red Supergiant
What does a low mass star become when it starts to die
Red Giant
What happens when a red supergiant dies
Supernova
What happens when a red giant dies
White Dwarf
Planetary Nebula
What comes after a supernova
Supernova remnant
Black hole
Neutron star
What happens to a planetary nebula
White dwarf
What can a neutron star become
Pulsar
What can a black hole become
x-ray emission
What does a white dwarf become
Supernova
Nova
What can a nova become
White dwarf
How long ago did the big bang happen
13.77 bill years ago
what happen t=1/10^43 sec after the big bang
Time and space begun
temp was 1mill trill trill degrees celcius
what happen t=1/10^34 sec after the big bang
Matter such as positron and electrons formed
Particles collided causing the first light in the universe
what happen t=1/10^4 sec after the big bang
Protons and neutrons formed due to collisions of particles
what happen t=1/100 sec after the big bang
Expanding and cooling rapidly
what happen t=1 sec after the big bang
The universe was probably more than trill trill km across
temp 10 bill degrees Celsius
what happen t=5 min after the big bang
Nuclei of Hydrogen, helium, lithium formed
what happen t=300000 years after the big bang
about 1/1000 of its current size
temp 3000 degrees Celsius
First atoms formed
Universe was dark
what happen t=200 000 000 years after the big bang
First stars formed
Nuclear reaction happened within stars
planets started to form from heavier nuclei
what happen t=1 000 000 000 years after the big bang
The first galaxies formed
Proof of the big bang
Red Shift
Cosmic Microwave Background radiation
How does a star start to form
Star formation begins when hydrogen gas is pulled
into a dense ball by gravity.
What happens in a main sequence star
The compression of hydrogen in a protostar
continues for hundreds of thousands of years.
When the temperature reaches 13 million
degrees Celsius, nuclear fusion begins.
What is an interstellar medium
The interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy.
