starific
How bright a star appears to your eye on earth is?
Apparent brightness
What % of the universe is dark matter
95
What does iron fuse into
nothing
Venus atmosphere is mostly made up of this element?
Carbon dioxide
How old is the earth?
4.6 billion years
What is a star that emits radiation when the axis and magnetic field axis are not aligned
Pulsar
The universe is accelerating?
true
Saltwater and a spin axis cause what?
magnetosphere
How long did it take for simple life (blue-green algae) to form?
1 billion years
How old is the universe?
8 billion years old
What is a type ll super nova
high mass star
What end of a star feature would cause the greatest shift in space and time?
Black hole
How long did it take for simple complex life like trilobites form?
4 billion years
How much more matter was there than antimatter?
1%
What are the 4 forces
strong, weak, electromagnetic, gravity
What bodies experience the auroras
jovian planets and some moons
Where do stars form?
molecular cloud
Who is geologically dead?
Moon Mercury
Who made an earth center view of the solar system using epicycles and referents.
ptolemy
What is the believed reason for the “irregularities” in the solar system, for example, Uranus rotating on side and Venus rotating clockwise?
random collisions
What causes a star to "wobble"?
orbiting about the center of mass
Who is our neighbor galaxy that we are on a collision course with.
Andromeda
What is a tidal force that results from the unequal gravitational pull on two sides of a body that leads to gravitational flexing or kneading in their centers.
tidal heating
What is believed to be at the center of our galaxy?
super massive blackhole
The binary star Algol consists of a 3.7MSun main- sequence star and a 0.8MSun subgiant star. What is odd about this pairing
heavy main sequence vs giant