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Our Nearest Neighbor
Our moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate, and creating a tidal rhythm that has guided humans for thousands of years. The moon was likely formed after a Mars-sized body collided with Earth and the debris formed into the most prominent feature in our night sky.

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  News Features People Extreme Facts Dictionary

 
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Q
bar

= 0.987 atmosphere = 1.02 kg/cm^2 = 100 kilopascal = 14.5 lbs/square inch.

billion

1,000,000,000

biodiversity

The variety and variability among living organisms and the ecological complexes in which they occur.

bolide

a very bright meteor (or fireball) that produces a sonic boom.

bright terrain

A type of surface on Ganymede which is lighter than other regions on this moon which is often associated with grooves (see also dark terrain).

 
Can't find it? Don't understand it? Ask us.
Q
bar

= 0.987 atmosphere = 1.02 kg/cm^2 = 100 kilopascal = 14.5 lbs/square inch.

billion

1,000,000,000

biodiversity

The variety and variability among living organisms and the ecological complexes in which they occur.

bolide

a very bright meteor (or fireball) that produces a sonic boom.

bright terrain

A type of surface on Ganymede which is lighter than other regions on this moon which is often associated with grooves (see also dark terrain).