What is the green house effect and what causes it on Earth? The glacial ice that covers the continent of Antarctica is divided into two massive sheets by the transAntarctic mountain range...

What is the green house effect and what causes it on Earth? The glacial ice that covers the continent of Antarctica is divided into two massive sheets by the transAntarctic mountain range...

Astronomy-based question. Question: Cutter is a star with an apparent magnitude of +2.3 and an absolute magnitude of -1.1. Casper is a star with an apparent magnitude of -3.7 and...

In reality the galactic motion in the Universe is a mixture of the two. Consider looking at galaxies with several different redshift values. Consider the following two cases: PART A) Classical...

A line in a star's spectrum lies at 400.0 nm. In the laboratory, that same line lies at 400.2 nm. How fast is this star moving? Is it moving towards or away from us?

In 5-10 sentences, describe two very different observations that are caused by the same thing. This question can be interpreted in a variety of ways; the link between your observations may involve...

At what velocity must a basketball player leave the ground to rise 1.25m above the floor in an attempt to get the ball. Show all the steps taken to get to the answer.

If you have a car that can accelerate with a=5m/s^-2, how long does it take the car to reach a velocity of v=25m/s^-1 (which is equivalent to 90km/h) ? Show all the steps taken to get to the answer...

Show all the steps taken to get to the answer.

Note that the diameter of the Milkyway is 100,000 light years. The distance to the Andromeda Galaxy M31 is 2.5 Million light years. Show all the steps taken to get to the answer.

Show all the steps taken to get to the answer.

Please show all the steps taken to reach the answer.

without knowing it’s a sphere but how do we know it’s not a cube? Why can’t it be a cube

Some Earth facts, reasons why it’s not donut shape.

evidence, known facts

If Venus rotated as fast as earth does.

Why don't jovian planets have a surface temperature?

What is the general pattern of the relationship between the distances of the planets from the Sun and their temperature?

Describe how the distances between the orbits of the inner planets compare to the distances between the orbits of the outer planets

Describe how the distances between the orbits of the inner planets compare to the distances between the orbits of the outer planets.

if the parallax shift of a star is 0.150 seconds of sarc, what is the distance to the star in light years?