Blog

Earth’s axis is tilted ______________ degrees from the normal to the ecliptic plane.

This planet has the largest known volcano in the solar system, Olympus Mons.

One ______________ is the distance to a star when the star exhibits a parallax of one second of arc.

The temperature of the Sun’s interior is estimated to be about how many kelvins?

Stars and galaxies emit all types of electromagnetic radiation, including _____________________, so spectroscopy is a major tool for studying the universe.

The apparent motion of an object when it is viewed from two different positions against a fixed background is called

Which of the following is typically the largest of the four?

Probably the best-known comet is ______________ Comet.

From Earth, we see only one side of the Moon because the Moon’s movement about Earth is __________, meaning its period of rotation is the same as its period of revolution.

The lowest tides are called