The Second Closest Planet To The Sun, Venus. Venus Is About The Same Size As Earth, Having A 12,104 Km

NASA and Veterans

November 11 each year is a day we honor those who have served in our nation’s armed forces. 

Discover how we have close ties to the military, even to this day, and see who has traded in their camouflage uniform for an astronaut flight suit.

There have been veterans working for us since the beginning, even when it was still called the National Advisory Committee for Aeronautics (NACA). 

Additionally, there are several active duty military members working at NASA facilities through special government programs.

Today, there are more than 1500 veterans currently employed with us. Their experiences in the military make their expertise invaluable around the agency. We value the unique leadership style they bring to the work place.  Above and below are some astronaut veterans.

A Partnership for the Space Age

Since the early days of NASA, we’ve partnered with all branches of the military. We still work closely with the military today and rely on the expertise of our service members to support our missions both while in active duty and in the civilian workforce. Here are some examples of this close partnership:

The Marines helped with recovery efforts of Astronaut Alan Shepard at the end of his sub-orbital flight on May 5, 1961…a task performed across several of our missions.

Today, the Navy helps us recover spacecraft, just like the Orion space capsule…which will one day carry astronauts into deep space and eventually on our journey to Mars. 

…and the Air Force has traditionally and continues to help us transport sensitive and critical space hardware around the globe. 

The Coast Guard has even helped us access remote locations to collect oceanographic data as part of our efforts to study and learn more about the Earth. 

We’ve partnered with the Army to use their unique capabilities at the Yuma Proving Ground to test the entry, descent and landing of our spacecraft systems.

To all the Veteran’s out there, we thank you for your service to America and your continued support of America’s space program.

Happy Veteran’s Day!

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com

The sprawling Caloris basin on Mercury is one of the solar system’s largest impact basins, created during the early history of the solar system by the impact of a large asteroid-sized body. The multi-featured, fractured basin spans about 1,500 kilometers in this enhanced color mosaic based on image data from the Mercury-orbiting MESSENGER spacecraft. Mercury’s youngest large impact basin, Caloris was subsequently filled in by lavas that appear orange in the mosaic. Craters made after the flooding have excavated material from beneath the surface lavas. Seen as contrasting blue hues, they likely offer a glimpse of the original basin floor material. Analysis of these craters suggests the thickness of the covering volcanic lava to be 2.5-3.5 kilometers. Orange splotches around the basin’s perimeter are thought to be volcanic vents.

Image Credit: NASA, Johns Hopkins Univ. APL, Arizona State U., CIW

H.J. Detouche’s 1754 painting depicting Galileo Galilei displaying his telescope to Leonardo Donato, Doge of Venice.

Keep reading

Goodbye to M42 for this year.  But I’ll see you again in November.  Meanwhile I can look at this picture I took in January of this year.

www.astrotidbits.com

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.

Eclipse News at AstroTidbits

Don’t know how to prepare for the coming total eclipse of the sun?  Get some info at http://www.astrotidbits.com and be ready.

Calcite Cluster on Matrix

Locality:  Stoneco Auglaize Quarry (Maumee Stone Co. Quarry), Junction, Paulding Co., Ohio.

China’s giant alien-hunting telescope is ready

Our alien-hunting game just got a lot stronger with the completion of a huge radio telescope in the Guizhou province of China. It’s called the Five-hundred-meter Aperture Spherical Telescope (FAST), and it’s designed to listen for signs of alien life out in the cosmos. The telescope is finished, but the construction was not without human rights controversy.

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Սպիրու Կոստաքեի Հարեթ Spiru C. Haret

Romanian Armenian mathematician, astronomer and politician. He made a fundamental contribution to the n-body problem in celestial mechanics by proving that using a third degree approximation for the disturbing forces implies instability of the major axes of the orbits, and by introducing the concept of secular perturbations in relation to this. (Proved that planetary motion is not absolutely stable)  As a politician, during his three terms as Minister of Education, Haret ran deep reforms, building the modern Romanian education system. He was made a full member of the Romanian Academy in 1892. He also founded the Astronomical observatory in Bucharest, The crater Haret on the Moon is named after him. The Spiru Haret University, a private university in Bucharest, Romania, bears the name of a scientist and reformer of the Romanian education.

Born 15 February 1851 in Iaşi, Moldavia to an Armenian family, He showed talent for mathematics at a very young age, publishing two textbooks, one in algebra and one in trigonometry when he was still in high school. Whilst in his second year studying physics and mathematics the in the University of Bucharest, he became a teacher of mathematics in Nifon Seminary.

After graduation, Haret won a scholarship competition organized by Titu Maiorescu and went to Paris in order to study mathematics at the Sorbonne. There he earned a mathematics diploma in 1875 and a physics diploma in 1876. Two years later he earned his Ph.D. by defending his thesis, Sur l’invariabilité des grandes axes des orbites planétaires (On the invariability of the major axis of planetary orbits), in front of examiners led by Victor Puiseux. In this work he proved a result fundamental for the n-body problem in astronomy, the thesis being published in Vol. XVIII of the Annales de l'Observatoire de Paris. Haret was the first Romanian to obtain a Ph.D. degree in Paris, (though he was of full Armenian descent)

After his return to Romania in 1878, Haret abandoned scientific research and dedicated the rest of his life to improving Romanian education, which was heavily underdeveloped at the time, both as professor and as politician. He only published an article on the secular acceleration of the Moon in 1880 and one on Jupiter’s Great Red Spot (1912). And in In 1910 he published Social mechanics, which used mathematics to explain social behaviour (somehow anticipating the fictional “psychohistory” branch of mathematics developed by Hari Seldon, the fictional character of Isaac Asimov‘s Foundation, published 40 years later).

He was appointed professor of rational mechanics at the Science Faculty in Bucharest. The next year Haret became a correspondent member of the Romanian Academy. He kept the professorship at the Science Faculty until his retirement in 1910.  As Minister of Education he ran a complete reform, basically building the modern Romanian education system