I forgot for so longs-
fscts:
The observable universe is about 93 billion light-years in diameter.
The universe is expanding, meaning galaxies are moving away from each other.
The average temperature of outer space is about -454.81 Fahrenheit (-270.45 Celsius).
The Hercules-Corona Borealis Great Wall is the largest known structure in the universe.
The largest volcano: Olympus Mons on Mars is the largest volcano in the solar system, standing at 13.2 miles (69,841 feet).
Uranus spins sideways: Uranus rotates on its side, appearing to roll around the sun like a ball.
Neutron stars spin fast: Neutron stars can spin at a rate of 600 rotations per second.
Dark matter is unknown: Dark matter is an unknown substance that makes up 85% of all matter in the universe.
Neptune takes a long time to orbit the sun: Neptune takes 165 years to complete one orbit around the sun.
Radiation is a hazard: Radiation is considered one of the most hazardous aspects of spaceflight.
The sun is a star: The sun is a giant star, not just a big, bright circle in the sky.
The moon changes shape: The moon changes shape.
A year on Mercury is short: A year on Mercury is shorter than a day.
Mars has dust storms: Mars has dust storms.
Saturn has rings: Saturn has beautiful rings.
Astronauts float in space: Astronauts float in space.
Shooting stars aren't stars: Shooting stars aren't stars.