What is Kepler's 3rd law or planetary motion?
Give this one a try later!
Planets orbit the sun on elliptical trajectories with sun as one of the focal
points
The cosmological principle assumes that the universe is isotropic. What does this
mean?
Give this one a try later!
The universe is infinite
,The proportions of atomic nuclei in the universe slowly change. As time passes, there
should be less light elements and more heavy elements. Why does this happen?
Give this one a try later!
Nuclear reactions in stars make heavier elements that get scattered
throughout the universe after a super nova
What causes the "Lyman-alpha forest" phenomenon that is characteristic of the light
from some quasars?
Give this one a try later!
Several clouds of gas and dust between us and the quasar
What is the main mechanism that causes galaxies to evolve?
Give this one a try later!
Galactic collisions
What is the largest thing that can be observed?
Give this one a try later!
, universe
What is dark matter?
Give this one a try later!
Unseen mass inferred from the motion of spin of galaxies
What immediately follows the creation of the positron?
Give this one a try later!
It reacts with an electron with both electron and positron being annihilated
and energy is produced
How does energy transfer through the convection zone of the sun?
Give this one a try later!
Hotter material rises to the surface while cooler material sinks towards the
center to get reheated
What is the name to the cluster of galaxies that the Milky Way belongs to?
Give this one a try later!
, Local Group
What discourages the collapse of a nebular gas cloud under gravity in star formation?
Give this one a try later!
a) heat
b) magnetic fields
c) rotation
**d) all of the above
Which type of the variable star has a constant luminosity?
Give this one a try later!
RR Lyrae
What motion is responsible for the Polar star shifting with a period of 26,000 years?
Give this one a try later!
Earth's precession about it axis
What is Kepler's 2nd law of planetary motion?
Give this one a try later!
Give this one a try later!
Planets orbit the sun on elliptical trajectories with sun as one of the focal
points
The cosmological principle assumes that the universe is isotropic. What does this
mean?
Give this one a try later!
The universe is infinite
,The proportions of atomic nuclei in the universe slowly change. As time passes, there
should be less light elements and more heavy elements. Why does this happen?
Give this one a try later!
Nuclear reactions in stars make heavier elements that get scattered
throughout the universe after a super nova
What causes the "Lyman-alpha forest" phenomenon that is characteristic of the light
from some quasars?
Give this one a try later!
Several clouds of gas and dust between us and the quasar
What is the main mechanism that causes galaxies to evolve?
Give this one a try later!
Galactic collisions
What is the largest thing that can be observed?
Give this one a try later!
, universe
What is dark matter?
Give this one a try later!
Unseen mass inferred from the motion of spin of galaxies
What immediately follows the creation of the positron?
Give this one a try later!
It reacts with an electron with both electron and positron being annihilated
and energy is produced
How does energy transfer through the convection zone of the sun?
Give this one a try later!
Hotter material rises to the surface while cooler material sinks towards the
center to get reheated
What is the name to the cluster of galaxies that the Milky Way belongs to?
Give this one a try later!
, Local Group
What discourages the collapse of a nebular gas cloud under gravity in star formation?
Give this one a try later!
a) heat
b) magnetic fields
c) rotation
**d) all of the above
Which type of the variable star has a constant luminosity?
Give this one a try later!
RR Lyrae
What motion is responsible for the Polar star shifting with a period of 26,000 years?
Give this one a try later!
Earth's precession about it axis
What is Kepler's 2nd law of planetary motion?
Give this one a try later!
