Cards in this guide (11)
Clouds of gas and dust in which stars from are called what
Clouds of gas and dust from which stars form are called interstellar matter.
Which planet was studied by the Mariner 10 probe and has a crater-covered surface
What percentage of the Sun is composed of helium
The sun in composed of 25 percent helium. The other 75 percent
is hydrogen. The sun also has small amounts of other elements such
as neon, oxygen, carbon, and magnesium.
What are massive celestial bodies of gases that emit heat and light by radiation
What is the average rotation of the Sun on its axis
Stars are formed from clouds of dust and gas called
Sunspots follow a cycle of how many years
What are warm moist air masses that form near the equator called
They are called maritime tropical air masses.
How many official constellations are currently recognized
Which planet completes its rotation in 59-60 Earth days
Pangea broke apart and the land masses drifting creating a process called