Earth

The cosmos at our fingertips.
Joseph Buell
Science Officer
Posts: 100
Joined: Tue Dec 22, 2020 3:38 pm
Location: Milky Way

Earth: Measuring Up

Post by Joseph Buell » Fri Jan 15, 2021 2:57 am

If the Sun were as tall as a typical front door, Earth would be the size of a nickel.
Source: NASA
Nothing in life is to be feared, it is only to be understood.

Joseph Buell
Science Officer
Posts: 100
Joined: Tue Dec 22, 2020 3:38 pm
Location: Milky Way

Earth: Third Rock

Post by Joseph Buell » Fri Jan 15, 2021 2:59 am

Earth orbits our Sun, a star. Earth is the third planet from the Sun at a distance of about 93 million miles (150 million km).
Source: NASA
Nothing in life is to be feared, it is only to be understood.

Joseph Buell
Science Officer
Posts: 100
Joined: Tue Dec 22, 2020 3:38 pm
Location: Milky Way

Earth: As the World Turns

Post by Joseph Buell » Fri Jan 15, 2021 3:00 am

A day on Earth is 24 hours. Earth makes a complete orbit around the sun (a year in Earth time) in about 365 days.
Source: NASA
Nothing in life is to be feared, it is only to be understood.

Joseph Buell
Science Officer
Posts: 100
Joined: Tue Dec 22, 2020 3:38 pm
Location: Milky Way

Earth: We're on It

Post by Joseph Buell » Fri Jan 15, 2021 3:01 am

Earth is a rocky planet with a solid and dynamic surface of mountains, canyons, plains and more. Most of our planet is covered in water.
Source: NASA
Nothing in life is to be feared, it is only to be understood.

Joseph Buell
Science Officer
Posts: 100
Joined: Tue Dec 22, 2020 3:38 pm
Location: Milky Way

Earth: Breathe Easy

Post by Joseph Buell » Fri Jan 15, 2021 3:01 am

Earth's atmosphere is 78 percent nitrogen, 21 percent oxygen and 1 percent other ingredients—the perfect balance to breathe and live.
Source: NASA
Nothing in life is to be feared, it is only to be understood.

Joseph Buell
Science Officer
Posts: 100
Joined: Tue Dec 22, 2020 3:38 pm
Location: Milky Way

Earth: Our Cosmic Companion

Post by Joseph Buell » Fri Jan 15, 2021 3:03 am

Earth has one moon.
Source: NASA
Nothing in life is to be feared, it is only to be understood.

Joseph Buell
Science Officer
Posts: 100
Joined: Tue Dec 22, 2020 3:38 pm
Location: Milky Way

Earth: Ringless

Post by Joseph Buell » Fri Jan 15, 2021 3:03 am

Earth has no rings.
Source: NASA
Nothing in life is to be feared, it is only to be understood.

Joseph Buell
Science Officer
Posts: 100
Joined: Tue Dec 22, 2020 3:38 pm
Location: Milky Way

Earth: Orbital Science

Post by Joseph Buell » Fri Jan 15, 2021 3:04 am

Many orbiting spacecraft study the Earth from above as a whole system—observing the atmosphere, ocean, glaciers, and the solid earth.
Source: NASA
Nothing in life is to be feared, it is only to be understood.

Joseph Buell
Science Officer
Posts: 100
Joined: Tue Dec 22, 2020 3:38 pm
Location: Milky Way

Earth: Home, Sweet Home

Post by Joseph Buell » Fri Jan 15, 2021 3:05 am

Earth is the perfect place for life as we know it.
Source: NASA
Nothing in life is to be feared, it is only to be understood.

Joseph Buell
Science Officer
Posts: 100
Joined: Tue Dec 22, 2020 3:38 pm
Location: Milky Way

Earth: Protective Shield

Post by Joseph Buell » Fri Jan 15, 2021 3:06 am

Our atmosphere protects us from incoming meteoroids, most of which break up in our atmosphere before they can strike the surface.
Source: NASA
Nothing in life is to be feared, it is only to be understood.