

= 6300 light years from
Space is measured in many different ways. It can be measured in simple units like kilometers. Or it could be measured in Astronomical Units (AUs), which are equal to the distance of the Earth from the Sun. Or you could measure in light years, which is the measure of how long it takes light from our Sun to reach a distance in space. Kilometers would be the smallest unit of measurement in space, then AUs, and finally light years.
The Crab Nebula is 6300 light years away from the Earth (this is equal to 5.956e+16 kilometers, or 398,409,931.70999978 AUs). If we were traveling at the speed of light, it'd take us 6,300 years to get to the Crab Nebula. But, since the speed of light is WAY faster than the speed of a normal human, it would take 299,792,457.605027794 years. A little bit longer than 6,300 years, don't you think? I think that, some day, maybe humans will travel to the Crab Nebula, but only if they go all Wall-E on the earth and take everyone on a GIANT ship and take them all to the Crab Nebula at the speed of light.
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