Posts tagged ‘science’

Lunar Impact Site Named After Sally Ride

Lunar Impact Site Named After Sally Ride – Science@NASA

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Dec. 18, 2012: NASA has named the site where twin gravity probes hit the Moon yesterday in honor of the late astronaut, Sally K. Ride, who was America’s first woman in space and a member of the probes’ mission team.

On Dec. 14th, Ebb and Flow, the two spacecraft of NASA’s GRAIL (Gravity Recovery and Interior Laboratory) mission, were commanded to descend into a lower orbit and target a mountain near the Moon’s north pole. The formation-flying duo hit the lunar surface as planned at 5:28:51 p.m. EST and 5:29:21 p.m. EST on Dec. 17th at a speed of 3,760 mph. The location of the Sally K. Ride Impact Site is on the southern face of an approximately 1.5 mile-tall mountain near a crater named Goldschmidt.

“Sally Ride worked tirelessly throughout her life to remind all of us, especially girls, to keep questioning and learning,” said Sen. Barbara Mikulski of Maryland. “Today her passion for making students part of NASA’s science is honored by naming the impact site for her.”

Much more in the article over at Science@NASA.

It was so sad to lose Sally Ride in July 2012.

Sally Kristen Ride (May 26, 1951 – July 23, 2012) was an American physicist and astronaut. Ride joined NASA in 1978 and, at the age of 32, became the first American woman to enter into low Earth orbit in 1983.

SallyRideScience – Sally Ride Science™ is an innovative science education company. Dr. Sally Ride, America’s first woman in space, founded the company to educate, engage, and inspire all students. The company brings science to life through pioneering professional development, instructional solutions, and real-science investigations for students in 4th-8th grades.

Total Eclipse of the Sun

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Astronomers Studying an Eclipse painted by Antoine Caron in 1571

Astronomers Studying an Eclipse painted by Antoine Caron in 1571

My Jim and I were talking about Total Eclipses of the Sun and when we saw one as a child. He remembered that he was about 7 years old and that it was in the afternoon and he was in the Solarium in his house when it happened; I remembered that it was when I was with my Dad making his rounds in the dry cleaning delivery truck on a Saturday and knew I had to be about 8 years old or so and remembered it being in the afternoon (I thought). But neither of us could be sure what year for sure it was.

We wanted to nail it down, since we both saw it together in two different states together. So, I went to the NASA Solar Eclipse page and started looking in the early 60s for a Total Eclipse. Sure enough, there it was July 20, 1963 (here‘s the page where we found it).

All these years later, we both remembered quite a bit about it … and the deepest part of the eclipse only lasted about 1 minute 40 seconds.

Eclipses can be exciting, maybe even a little bit scary, or may cause some measure of anxiety for a child because they have never seen such a thing happen before in their little lives. Giving them as much information as possible, especially for a curious child, can be a great defense against such anxiety. We loved it. Both of us did, even as children. But both of us had some knowledge of what was going on. Science fascinated us both. I remember a woman from the West Indies who was with me when it happened (we stopped at a Judge’s house at the Jersey Shore on my Dad’s rounds noted earlier, and this woman and her husband worked in the house and were good friends of my Dad), and she said that this could be a once in a lifetime thing. She had only seen one once before in her life.

The next Total Eclipse of the Sun for our area in the United States won’t happen again until 2017 (August 21). Hard to say whether we both will still be here then. But I think it will be really interesting if we could share it together this time, instead of seeing it separately in two different states together like last time. Jim in Ohio and me at the Jersey Shore. We didn’t even know each other back then.

It is on my calendar for August 21, 2017 just in case. 😉

Solar eclipse of July 20, 1963 (Wikipedia)

According to Wikipedia, the next Total Solar Eclipse of the Sun after the one August 21, 2017, (that we could see here in the continental United States) won’t occur again until September 23, 2071.

I am pretty certain we won’t be here for that one, but our grandchildren will be.

Information on Solar Eclipses:

Solar eclipse (Wikipedia)

There are some very good external links on that page as well.

You can even listen to the article in .ogg format in two parts from Wikimedia linked on that page or click on the links below:

Solar Eclipses article in audio format from Wikimedia:

Part 1
Part 2

Solar Eclipses have been interpreted as all kinds of omens, portents, etc. in history; particularly related to battle.

In addition, there are some really interesting observations made including some cool scientific observations, as well as some anomalies as well, such as this from the Wikipedia article:

Gravity anomalies

There is a long history of observations of gravity-related phenomena during solar eclipses, especially around totality. In 1954 and again in 1959, Maurice Allais reported observations of strange and unexplained movement during solar eclipses. This phenomenon is now called the Allais Effect. Similarly, Saxl and Allen in 1970 observed sudden change in motion of a torsion pendulum, and this phenomenon is called the Saxl effect.

A recent published observation during the 1997 solar eclipse by Wang et al. suggested a possible gravitational shielding effect, though there is some serious debate. Later in 2002, Yang and Wang published detailed data analysis which suggested that the phenomenon still remains unexplained. More studies are being planned by NASA and ESA over the next decade.

Very interesting stuff!

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