Jupiter’s swirling clouds around the Great Red Spot. NASA/JPL.
This is what a comet looks like, up close and personal.
PHOTOS FROM AN ALIEN WORLD.
I am so excited I can’t even. Source: ESA’s Flickr feed.
What is the next step for hacktivists, radical or not. What’s 4Chan, what’s Anonymous and what’s the next thing? What’s the real deal - Ray Johansen gives his views.
Revolutionaries are always controversial. Some get proven right, some as a doing bad, some seen as doing equal amounts of both.The truth is complex. So we let Ray give us his views.
As part of our transparent process, we’re making some of our research interviews available for all. Check out both our Transparently Unedited interviews on our YouTube channel where you’ll and also find other awesome clips from a diverse set of characters.
On March 4 the first quarter moon passes between Earth and the star Aldebaran, temporarily blocking our view of the star. This is called an occultation.
The occultation begins and concludes at different times, depending on where you are when you view it.
The event should be easy to see from most of the U.S., Mexico, most of Central America, the Western Caribbean and Bermuda.
Observers along a narrow path from Vancouver, British Columbia, to Hartford, Connecticut, will see the moon “graze” the star. The star will disappear and reappear repeatedly as hills and valleys on the moon alternately obscure and reveal it.
As seen from Earth, both Mercury and Venus have phases like our moon. That’s because they circle the sun inside Earth’s orbit.
Planets that orbit between Earth and the sun are known as inner or inferior planets.
Inferior planets can never be at “opposition,” which is when the planet and the sun are on opposite sides of Earth.
But inferior planets can be at “conjunction,” which is when a planet, the sun and Earth are all in a straight line.
Conjunction can happen once when the planet is on the opposite side of the sun from Earth and again when it’s on the same side of the sun as Earth.
When a planet is on the opposite side of the sun from Earth, we say it is at “superior conjunction.” As the planet moves out from behind the sun and gets closer to Earth, we see less and less of the lit side. We see phases, similar to our moon’s phases.
Mercury is at superior conjunction on March 6.
A few weeks later, the planet emerges from behind the sun and we can once again observe it. By the end of March we’ll see a last-quarter Mercury.
On April 20 Mercury reaches “inferior conjunction.”
Brilliant Venus is also racing toward its own inferior conjunction on March 25. Watch its crescent get thinner and thinner as the planet’s size appears larger and larger, because it is getting closer to Earth.
Finally, look for Jupiter to rise in the East. It will be visible all month long from late evening until dawn.
You can catch up on solar system missions and all of our missions at www.nasa.gov
Watch the full “What’s Up for March 2017″ video here:
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The Great Red Spot
Stars, Mercury, and Solar Corona
By Stereo A
January 2nd & 3rd, 2009
As the daughter of our town’s E.S.D.A. Coordinator, I have always been intrigued by ham radio. My father (and elmer) has been a ham for about 40 years. He actually received his license when he was in high school!
After studying for three weeks, I went to take the ham test. I was very discouraged to see that I was the only girl in the room. However, I was treated like a queen by the group that was hosting the test. They seemed excited to have a female in their midst.
Upon receiving my Technician license, I eagerly awaited the Tuesday night ARES net (which my dad happens to be the Net Control of). Again, I was saddened to hear but a few female voices. Over time, I noticed that the female hams rarely checked in to the net. I wondered why these women who worked so hard to achieve their licenses would not want to take advantage of all that ham radio has to offer.
I hope that women are being encouraged to be active hams. Whether they join a club or simply make contacts, females are providing a fresh voice and perspective to the hobby. So, ladies, do not be shy! Proudly check in with your call sign. You have earned it!
A once in a lifetime event visible every 75-76 years, Halleys comet returned in 1986. Halley is the only short-period comet that is clearly visible to the naked eye from Earth. It has been documented since 240 BC.
We’ve studied life on Earth extensively, but we still have no idea where it came from. Some scientists think it may have spontaneously arisen on Earth by some unknown process. Others think the ingredients for life were delivered here by comets crashing into Earth in the early days of the solar system. The latter theory just got a huge boost.
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The transit of Mercury, left, in front of the Sun, photographed from St.Petersburg, Russia on May 9th 2016. The photo was taken through a hydrogen-alpha (H-alpha) narrow spectrum solar telescope that permits examination of the sun’s protuberances and shows the surface activity. Credit: AP/Dmitri Lovetsky