Page 23 - INSIDE ACCESS NOVEMBER 2ND EDITION

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Fun Facts
Interesting facts about space
Space is completely silent
Sound waves need a medium to travel through. Since there is no atmosphere in the vacuum of space, the realm between stars will always be eerily silent.
There is an uncountable number of stars in the known universe
We basically have no idea how many stars there are in the universe. Right now we use our estimate of how many stars there are in our own galaxy, the Milky Way. We then multiply that number by the best guesstimate of the number of galaxies in the universe.
The Apollo astronauts' footprints on the moon will probably stay there for at least 100 million years
Since the moon doesn't have an atmosphere, there's no wind or water to erode or wash away the Apollo astronauts' mark on the moon. That means their footprints, roverprints, spaceship prints, and discarded materials will stay preserved on the moon for a very long time.
If two pieces of the same type of metal touch in space, they will bond and be permanently stuck together
This amazing effect is called cold welding. It happens because the atoms of the individual pieces of metal have no way of knowing that they are different pieces of metal, so the lumps join together.
99%
99 percent of our solar system's mass is the sun
Our star, the sun, is so dense that it accounts for a whopping 99 percent of the mass of our entire solar system. That's what allows it to dominate all of the planets gravitationally.
More energy from the sun hits Earth every hour than the planet uses in a year
The use of solar energy has increased at a rate of 20 percent each year for the past 15 years. According to Yale Environment 360, the world added 30 percent more solar energy capacity in 2017, meaning that 98.9 gigawatts of solar energy was produced that year.
PAGE 23 INSIDE ACCESS | NOVEMBER 2020 2ND EDITION