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Incredible “EPIC” View Of The Moon Passing In Front Of The Earth

This is real, folks. It is not a computer-generated animation. NASA’s DSCOVR (Deep Space Climate Observatory) satellite took these incredible shots on July 16 using its Earth-facing EPIC camera from its vantage point between the Earth and the Sun, a million miles away!

DSCOVR sits at what’s known as the L1 Lagrangian point, where the gravitational pull of the Earth and Sun balance out in such a way that satellites positioned there can remain in stable orbit while using minimal energy:

Image: NASA/NOAA

This view of the far side of the Moon reminds us that it is anything but dark. The Moon is tidally locked, meaning that we see the same face all the time, but the sun regularly shines on the side that we don’t see (we’re just seeing a new or crescent moon when that happens). The far side also lacks the dark plains, or maria, that texture the Earth-facing side, made of basalt laid down by ancient lunar lava flows, reminding us that our lunar satellite has a complex geologic history:

Buzz Aldrins self-portrait during Gemini 12 with the Earth reflecting off his visor, 12 November 1966

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Geometry and symmetry in plants, part 2

See the full thread here

Fill your void

Space Launch System

Our Space Launch System (SLS) is an advanced launch vehicle for exploration beyond Earth’s orbit into deep space. SLS, the world’s most powerful rocket, will launch astronauts in our Orion spacecraft on missions to an asteroid and eventually to Mars!

A launch system required to carry humans faster and farther than ever before will need a powerful engine, aka the RS-25 engine. This engine makes a modern race car or jet engine look like a wind-up toy. With the ability to produce 512,000 pounds of trust, the RS-25 engine will produce 10% more thrust than the Saturn V rockets that launched astronauts on journeys to the moon!

Another consideration for using these engines for future spaceflight was that 16 of them already existed from the shuttle program. Using a high-performance engine that already existed gave us a considerable boost in developing its next rocket for space exploration.

Once ready, four RS-25 engines will power the core stage of our SLS into deep space and Mars.

Islamic Art

Most everyone is familiar with geometry and patterns.  The above image by Richard Henry is included here to give some mathematical frame of reference.  The artistic emphasis of these ideas gained prominence due to certain religious rules in Islamic religious texts forbidding the portrayal of human forms in worship.  Additionally, the advanced mathematical discoveries in the middle east brought about some wonder toward the patterns of these ideas.  The underlying message in such geometries, within the Islamic context, is the infinite and natural power of God.  It is important to note that ideas like zero, our decimal counting system, and algebra originated from India and the middle east.  Arabic calligraphy is also similarly celebrated and made the subject of  many past and current Islamic art.