Our Pale Blue Dot Imaged By Various Spacecrafts. Image Credits: From Quarks To Quasars, jaxa/nhk, Cassini,

Our Pale Blue Dot Imaged by Various Spacecrafts. Image Credits: From Quarks to Quasars, jaxa/nhk, Cassini, MESSENGER, NASA, Juno, JPL.

First image, compilation of some of the most memorable photos of Earth from space.

Second image, Earth & moon as seen from MESSENGER. Read more here.

Third image, Cassini captures Moon-Earth system. Read more here.

Fourth image, a compilation of best SELENE images of Earth from the Moon’s surface. Read more here.

A High School Teacher's List of 100 Wisest Words

1. There are plenty of ways to enter a pool. The stairs is not one of them.

2. Never cancel dinner plans by text message.

3. Don’t knock it ‘til you try it.

4. If a street performer makes you stop walking, you owe him a buck.

5. Always use ‘we’ when referring to your home team or your government.

6. When entrusted with a secret, keep it.

7. Don’t underestimate free throws in a game of ‘horse’.

8. Just because you can doesn’t mean you should.

9. Don’t dumb it down.

10. You only get one chance to notice a new haircut.

11. If you’re staying more than one night, unpack.

12. Never park in front of a bar.

13. Expect the seat in front of you to recline. Prepare accordingly.

14. Keep a picture of your first fish, first car, and first boy/girlfriend.

15. Hold your heroes to a high standard.

16. A suntan is earned, not bought.

17. Never lie to your doctor.

18. All guns are loaded.

19. Don’t mention sunburns. Believe me, they know.

20. The best way to show thanks is to wear it. Even if it’s only once.

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aztlan27

7 years ago

All Eyes on the Sky for the August 21 Total Solar Eclipse

Just two months from now, the moon will completely block the sun’s face, treating part of the US to a total solar eclipse.

Everyone in North America will have the chance to see an eclipse of some kind if skies are clear. Anyone within a 70-mile-wide swath of land — called the path of totality — that stretches from Oregon to South Carolina will have the chance to see a total eclipse.

Throughout the rest of the continent, including all 50 United States — and even in parts of South America, Africa, Europe, and Asia — the moon will partially obscure the sun, creating a partial eclipse.

Photo credit: NASA/Cruikshank

An eclipse is one of nature’s most awesome sights, but safety comes first! When any part of the sun’s surface is exposed, use proper eclipse glasses (not sunglasses) or an indirect viewing method, like a pinhole projector. In the path of totality, it’s safe to look directly at the eclipse ONLY during the brief moments of totality.

During a solar eclipse, the moon passes between the sun and Earth, casting a shadow down on Earth’s surface. We’ve been studying the moon with NASA’s Lunar Reconnaissance Orbiter, and its precise mapping helped NASA build the most accurate eclipse map to date.

During a total solar eclipse, the moon blocks out the sun’s bright face, revealing the otherwise hidden solar atmosphere, called the corona. The corona is one of the sun’s most interesting regions — key to understanding the root of space weather events that shape Earth’s space environment, and mysteries such as why the sun’s atmosphere is so much hotter than its surface far below.

This is the first time in nearly 100 years that a solar eclipse has crossed the United States from coast to coast. We’re taking advantage of this long eclipse path by collecting data that’s not usually accessible — including studying the solar corona, testing new corona-observing instruments, and tracking how our planet’s atmosphere, plants, and animals respond to the sudden loss of light and heat from the sun.

We’ll be studying the eclipse from the ground, from airplanes, with research balloons, and of course, from space.

Three of our sun-watchers — the Solar Dynamics Observatory, IRIS, and Hinode, a joint mission led by JAXA — will see a partial eclipse from space. Several of our Earth-observing satellites will use the eclipse to study Earth under uncommon conditions. For example, both Terra and DSCOVR, a joint mission led by NOAA, will capture images of the moon’s shadow from space. Our Lunar Reconnaissance Orbiter will also turn its instruments to face Earth and attempt to track the moon’s shadow as it moves across the planet.

There’s just two months to go until August 21, so make your plans now for the big day! No matter where you are, you can follow the eclipse as it crosses the country with live footage from NASA TV.

Learn more about the upcoming total solar eclipse — including where, when, and how to safely experience it — at eclipse2017.nasa.gov and follow along on Twitter @NASASun.

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com

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