For 15 days starting on March 7, 2017, NASA’s Solar Dynamics Observatory, or SDO, returned visible light images of a yolk-like spotless sun. This is the longest stretch of spotlessness since the last solar minimum in April 2010, indicating the solar cycle is marching on toward the next minimum, which scientists predict will occur between 2019—2020. [ Go.nasa.gov Link ]
NASA is embracing small satellite designs, from tiny CubeSats to micro-satellites. One of the satellites featured here, CuSP, will serve as a space weather station!

[ Youtu.be Link ]

ScienceCasts: NASA Embraces Small Satellites

Visit http://science.nasa.gov/ for more. NASA is embracing small satellite designs, from tiny CubeSats to micro-satellites. These miniature marvels are provi...

YOUTUBE.COM
NASA scientists Nicki Viall, Alex Young, and Yari Collado-Vega spoke to more than 40 television and radio stations on March 20, 2017 about the Spring equinox and the upcoming Total Solar Eclipse in August. To learn more check out [ Eclipse2017.nasa.gov Link ].
Today is an equinox, one of two days a year when night and day are just about equal lengths across the globe. In the Northern Hemisphere, this equinox marks the beginning of astronomical spring.

We’re live at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, talking about the equinox and another celestial event — the total solar eclipse of Aug. 21, 2017. This August, the moon will...
View details ⇨
Want to learn more about today's spring equinox and the total solar eclipse of Aug. 21? Join us here on this page today, March 20, at 1pm ET for a live show, and be ready to ask us questions in the comments of the live video!
Today, March 20, is the vernal equinox--the first day of astronomical spring in the Northern Hemisphere.

Join us for a live show on the equinox and the upcoming solar eclipse today (March 20) at 1pm ET. We'll be taking questions from viewers, so be ready to put your questions in the comments of the live video!

Learn more: [ Go.nasa.gov Link ]
The movements of the stars and the planets have almost no impact on life on Earth, but a few times per year, the alignment of celestial bodies has a visible effect. One of these geometric events — the spring equinox — is just around the corner, and another major alignment — a total solar eclipse — will be visible across America on Aug. 21, with a fleet of NASA satellites viewing it from space...
View details ⇨
Earth’s radiation belts, two doughnut-shaped regions of charged particles encircling our planet, were discovered more than 50 years ago, but their behavior is still not completely understood. Now, new observations from NASA’s Van Allen Probes mission show that the fastest, most energetic electrons in the inner radiation belt are not present as much of the time as previously thought. The...
View details ⇨
Near New York City this weekend?

NASA’s Solarium invites visitors to get up close and personal with the sun on March 18, 2017, in celebration of Sun-Earth Day at the American Museum of Natural History in New York City. The museum’s Sun-Earth Day program will explore the special, ever-changing connection between Earth and the sun.

[ Go.nasa.gov Link ]
On Aug. 21, 2017, a total solar eclipse will cross the US. Within the narrow path of totality -- which stretches from Oregon to South Carolina -- the moon will completely obscure the sun. Throughout the rest of the 50 states, the moon will cover part of the sun in a partial solar eclipse.

Download this map and detailed maps for each state within the path of totality: [ Eclipse2017.nasa.gov...
View details ⇨
An active region rotated over to the edge of the sun on March 8-9, 2017, presenting us with a profile view of its elongated loops stretching and swaying above it in this footage captured by NASA's Solar Dynamics Observatory. These bright loops are actually charged particles -- which emit extreme ultraviolet light -- swirling along the magnetic field lines of the active region. The video was...
View details ⇨
Download this image: [ Gsfc.nasa.gov Link ]
Launched on March 12, 2015, the four spacecraft of NASA's Magnetospheric Multiscale mission have been studying magnetic reconnection in near-Earth space for two years! Learn more at
As scientists gear up for a total solar eclipse across the nation on Aug. 21, 2017, some are also remembering the eclipse observations from March 7, 1970 – gathered during a bout of rapid fire sounding rocket launches. Known by some as the “eclipse of the century,” the 1970 eclipse offered a unique perspective for scientific studies as it was the first time a total eclipse in the United States...
View details ⇨
Every day, invisible magnetic explosions are happening around Earth, on the surface of the sun and across the universe. These explosions, known as magnetic reconnection, occur when magnetic field lines cross, releasing stored magnetic energy. Such explosions are a key way that clouds of charged particles — plasmas — are accelerated throughout the universe. In Earth’s magnetosphere — the giant...
View details ⇨
How do we get data back from a spacecraft and turn it into usable information? Tori Fae, lead of the Science Data Center for the ICON mission, explains.
Several small sunspots appeared this week, giving us a chance to illustrate their sources. These three views of the sun were captured on March 2, 2017, by NASA’s Solar Dynamics Observatory. What’s the difference between these solar images?

- Black and white sun: This is a magnetogram, which is a map of the magnetic field on the sun’s surface. The black and white blotches reveal the strong...
View details ⇨
Late on March 1 (local time), we launched three sounding rockets from Alaska to study auroras. Two of them, pictured here, were launched within 90 seconds of each other! More: [ Go.nasa.gov Link ]
Our constantly-changing sun sometimes erupts with bursts of light, solar material, or ultra-fast energized particles — collectively, these events contribute to space weather. In a study published Jan. 30, 2017, in Space Weather, scientists from NASA and the National Center for Atmospheric Research, or NCAR, in Boulder, Colorado, have shown that the warning signs of one type of space weather...
View details ⇨
NASA's camera on board the DSCOVR satellite caught this view of the moon's shadow during the annular eclipse of Feb. 26.

An annular eclipse occurs when the moon passes in front of the sun but is too far from Earth to completely obscure it. This geometry leaves the sun’s edges exposed in a red-orange ring, creating the "ring of fire" effect for which annular eclipses are known.

More: [...
View details ⇨