astrophileszさんのイラストまとめ

Our solar system is 4.57 billion years old. Scientists estimate that in about 5 billion years, our Sun will expand becoming a Red Giant. In about 7.5 billion years its expanding surface will swallow up and engulf the Earth.

Only 5% of the universe is visible from Earth.68% of the universe is dark energy and 27% is dark matter. Both of these are invisible, even with a telescope, which means we are only able to see 5% of the universe.

When Galileo first trained his optic telescope on the heavens and opened up modern optical astronomy, that was the first of the electromagnetic windows out of the universe: light.

Kip Thorne

About once a year, an asteroid the size of a car enters Earth’s atmosphere. It burns up in the atmosphere before it hits us, fortunately.

“The Bible tells us how to go to Heaven, not how the heavens go.”

-Galileo Galilei

You are as old as the Universe,
because matter can't be created or destroyed. In the deepest level,
you are the Universe experiencing itself.

If you want to your kids to be Curious, teach them Astronomy
If you want your kids to be more Curious teach them more Astronomy.

This is Stephan’s Quintet seen by JWST. A galaxy cluster about 300 million light years away.

Enceladus, one of Saturn’s smaller moons, reflects 90% of the Sun’s light. Because Enceladus’ icy surface reflects sunlight rather than absorbing it, temperatures reach as low as -394° Fahrenheit (-201° Celsius).

Your mass is constant across the universe, while your weight measurement changes depending on the force of gravity wherever you are—and gravity changes from planet to planet. So, if you are overweight on earth you are not overweight but you are on wrong planet.