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Are there total #solareclipses elsewhere in the #SolarSystem? | @thephysicsgirl | #Mars #Jupiter #Saturn #Pluto

1 min read

Do the moons of Mars or the moons of Jupiter or moons of Pluto cause a total solar eciipse for those planets? What about the rings of Saturn? Watch this 5:04 video by Dianna Cowern or the Physics Girl to find out.

How a #SolarEclipse Happens | #K12 #visualization

1 min read

You might think that an eclipse should happen every month since the Moon's orbit, depending on how its defined is between 27 and 29 days long. But our Moon's orbit is tilted with respect to Earth's orbit around the Sun by about five degrees. So, sometimes the Moon's shadow misses too high and someimes too low to cause a solar eclipse. Only when the Sun, Moon and Earth line up close to the "lines of node," the imaginary line that represents the intersection of the orbital planes of the Moon and Earth, can you have an eclipse.

For more on how an eclipse works and different types of eclipses, visit NASA's ECLIPSE 101 page, part of their Eclipse2017 site.

NASA's Goddard Space Flight Center provided this (0:45) video.

The #Moon's Role in a #SolarEclipse | #video #tutorial by @NASAGoddard Scientific Visualization Studio | #Ecipse2017

1 min read

Ecipses happen when the Sun, Moon, and Earth line up just right. The 2:34 video totorial below, from NASA's Goddard Space Flight Center (download available), explains what happens during a total solar eclipse and a partial eclipse and how often they occur. The video also explains how a solar eclipse differs from a lunar exlipse and, gives a helpful tip on how to remember the difference,

NASA's Goddard Space Flight Cener July 21st announcement of the video tutorial with related videos.

Get Ready for #Eclipse2017 | #video by @NASAGoddard Scientific Visualization Studio

1 min read

From NASA's Goddard Space Flight Center:

(public domain, download at GMS) To learn all about the 2017 Total Eclipse, visit:

NASA Launchpad: Solar Eclipses | @NASA_eClips | #K12 #solareclipse #video

1 min read

Frank Espenak, from NASA Goddard Space Flight Center, explains the unique geometry and distances and sizes of the Sun and Moon as seen from Earth that allows us to witness the Sun's corona or actually be in the path of a total solar eclipse in this 2010 video (7:15). Video download and related links may be accessed through:

Moon Phases Demonstration | NSTA Press | Emily Morgan, author of Next Time You See the Moon

1 min read

Emily Morgan takes you through the phases of the Moon in this 4:15 video demonstration that is easy to replicate in a classroom. Materials needed: foam ball, pencil, light source, and yourself. The names for each phase are provided as you model Moon's orbit around you (the Earth).

Beware of the #earthquake #moose | Carl Tape | Mintos Flats seismic zone

1 min read

Weird signals in seismic data can be explained if you hang a camera on a nearby tree to see what's going on. This footage was taken by Carl Tape from a seismometer that is part of a NSF-funded study of the Mintos Flats (AK) seismic zone. To view other animal visitors by Carl at this seisometer site over the same winter, watch this video. h/t UNAVCO

Real World: #Earth #Systems | @NASA_eClips | #K12 #video #realworld #connections

1 min read

Middle school students learn in this 5:02 video that the Earth is a dynamic set of subsystems--the atmoshere, lithosphere, hydrosphere, cryosphere and biosphere. The subsystems interact in complex ways. Two NASA scientists, an atmospheric scientist from NASA Langley Research Center and an Earth scientist from NASA Goddard Space Flight Center, are interviewed. They answer questions and demonstrate how satellites and mathematical modeling help scientists improve their predictions of climate, weather, and natural hazards.

The Mystery of the Cleveland-Lloyd Dinosaur Death Trap by @SciShow | #dinosaur #mystery

1 min read

Hank Green and team share the findings of the recent CLDQ study by Peterson et al. for the first half of this week's SciShow (4:49). The last half is on the tubelip wrasse, a mucus-drenched fish.

The most groundbreaking scientist you've never heard of... | #TedEd #Science #history #video

1 min read

This 4:32 TedEd lesson by Addison Anderson, with animation by Anton Bogaty, recounts the little-known legacy of Nickolas Steno to the fields of geology, paleontology and biology. It was Steno's insistence on empiricism over blind history that influenced the likes of Charles Lyell and Charles Darwin.