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Demo-1: What’s the Deal?

Whether or not you caught the SpaceX Crew Dragon launch this past weekend, here’s your chance to learn why this mission, known as Demo-1, is such a big deal.

The First of its Kind

Demo-1 is the first flight test of an American spacecraft designed for humans built and operated by a commercial company. 

Liftoff

The SpaceX Crew Dragon lifted off at 2:49 a.m. EST Saturday, March 2, on the company’s Falcon 9 rocket from Kennedy Space Center. 

This was the first time in history a commercially-built American crew spacecraft and rocket launched from American soil. 

Docking the Dragon

After making 18 orbits of Earth, the Crew Dragon spacecraft successfully attached to the International Space Station’s Harmony module at 5:51 a.m. EST Sunday, March 3. The Crew Dragon used the station’s new international docking adapter for the first time since astronauts installed it in August 2016. 

The docking phase, in addition to the return and recovery of Crew Dragon, are critical to understanding the system’s ability to support crew flights.

A New Era in Human Spaceflight

Although the test is uncrewed, that doesn’t mean the Crew Dragon is empty. Along for the ride was Ripley, a lifelike test device outfitted with sensors to provide data about potential effects on future astronauts. (There is also a plush Earth doll strapped inside that can float in the microgravity!)

Astronauts on the International Space Station welcomed the Crew Dragon spacecraft in a ceremony onboard. NASA Astronaut Anne McClain from inside Crew Dragon said, “Welcome to a new era in human spaceflight.”

Inside the Dragon

For future operational missions, Crew Dragon will be able to launch as many as four crew members and carry more than 220 pounds of cargo. This will increase the number of astronauts who are able to live onboard the station, which will create more time for research in the unique microgravity environment.

SpaceX and NASA

Elon Musk, CEO and lead designer at SpaceX, expressed appreciation for NASA’s support: “SpaceX would not be here without NASA, without the incredible work that was done before SpaceX even started and without the support after SpaceX did start.”

Preparation for Demo-2

NASA and SpaceX will use data from Demo-1 to further prepare for Demo-2, the crewed flight test that will carry NASA astronauts and Doug Hurley and Bob Behnken to the International Space Station. NASA will validate the performance of SpaceX’s systems before putting crew on board for the Demo-2 flight, currently targeted for July 2019.

Undocking

The Crew Dragon is designed to stay docked to station for up to 210 days, although the spacecraft used for this flight test will remain docked to the space station for only five days, departing Friday, March 8. (We will be providing live coverage — don’t miss it!)

Demo-1: So What?

Demo-1 is a big deal because it demonstrates NASA and commercial companies working together to advance future space exploration! With Demo-1’s success, NASA and SpaceX will begin to prepare to safely fly astronauts to the orbital laboratory.

Follow along with mission updates with the Space Station blog.

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

By Jean Marie Carey

Caracalla (born Marcus Aurelius Antoninus in 188), was assassinated on 8 April 217, after nearly 20 years as one of the most reviled Roman emperors. Caracalla had a career of drastic purges and murders, having his numerous real and perceived enemies executed, including his brother Geta in 211. To placate Roman soldiers, he doubled the inheritance tax paid only by citizens.

In 213 he fought the Alamanni and became Germanicus Maximus. Obsessed by Alexander the Great, he raised a Macedonian phalanx and went east in his footsteps, through Asia and Syria to Alexandria, where large numbers who had mocked him were killed. When his offer to marry a Parthian princess was rejected, he attacked Media. While preparing a further campaign he was murdered near Carrhae.

Caracalla oversaw numerous aggrandizing projects. Geta and Caracalla commissioned the construction of the Gymnasium Complex in Sardis, Turkey, which was in use until and through the early Byzantine period. The gymnasium was a huge construction located next to the synagogue in Sardis. The large area adjoining the synagogue on the north was the gymnasium’s palaestra. The eastern facade of the baths was restored between 1964 and 1973.

Caracalla had an equally sumptuous thermae built in Rome, decorated with original Greek sculptures, ornaments, and architectural elements. Because of his notoriety, the emperor was a popular subject, despite a decree of damnatio memoriae, for contemporary and also later artists. Coins bearing his likeness are highly collectible.

Reference: Anthony R. Birley. “Aurelius (RE 46) Antoninus (1), Marcus.” In The Oxford Classical Dictionary.: Oxford University Press, 2012. http://www.oxfordreference.com/view/10.1093/acref/9780199545568.001.0001/acref-9780199545568-e-986.

Gymnasium Complex, ca. 161-211; ruined circa 7th century; baths restored 1964-1973. Sardis, Turkey. Nr.s R50630177and R50630430. Shmuel Magal, Sites and Photos.

Herakles Farnese, Roman copy of a Greek original 330-320 BCE. Recovered from Baths of Caracalla, Rome, now in Museo nazionale di Napoli

Gioacchino Altobelli, Ruins of the Thermae of Caracalla, albumen print photographs, ca. 1865. George Eastman House, Rochester, New York.

Denarius with Caracalla (Spätrömischer Kontorniat), ca. 200. Münzkabinett, Staatliche Museen zu Berlin, Nr. 92.073.

Bull rhyton (black steatite; wooden horns originally gilded) from Crete: Second Palace Period. ca. 1400 BCE. From the Roman Baths of Caracalla. The Archive for Research on Archetypal Symbolism, Nr. 18082.

Portrait head of the Emperor Marcus Aurelius Antoninus (called Caracalla), ca. 230. The Metropolitan Museum of Art. Nr. 40.11.1a.

Further Reading: Janet DeLaine. The Baths Of Caracalla: A Study In The Design, Construction, and Economics of Large-Scale Building Projects In Imperial Rome. Portsmouth, Rhode Island: Journal of Roman Archaeology, 1997. 

Clare Rowan. Under Divine Auspices: Divine Ideology and the Visualisation Of Imperial Power In The Severan Period. Cambridge: Cambridge University Press, 2012. 

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The Artist’s Studio (c.1845). Cornelius Krieghoff (Dutch-Canadian, 1815-1872). Oil on canvas. National Gallery of Canada.

Krieghoff travelled to Paris in 1844, where he copied masterworks at the Louvre under the direction of Michel-Martin Drölling, and returned to Montreal in 1846, advertising himself as an artist. He established a studio and began painting his views of people and activities. In these works, clothing and supporting objects are painted in fine detail while faces of the figures are more generalized.

Details from Venus and Her Satellites, 1835.

William Etty (British, 1787-1849)

Oil on panel

Nymphéas, Claude Monet

Girdle of Princess Sithathor

This girdle of the Princess Sithathor is made of eight gold, half-open cowry shells. The ones at each end have flat reverses, and were joined by means of grooves to serve as a clasp, fastening the girdle when they slid one into the other. The shells are separated from each other by rhomboidal polychrome beads of carnelian, feldspar, and lapis lazuli.

Gold cowry shells were imitations of the real cowry shells that had been used in belts, bracelets, anklets, and necklaces since the pre-dynastic period. People thought that cowry shells possessed powerful magical properties and increase female fertility.

Princess Sithathor was a daughter of King Senusret II, and was most probably a sister of Senusret III, as she was buried within his pyramid complex at Dahshur. Very fine pieces of jewelry that belonged to her were found in her tomb; they are now preserved in the Egyptian Museum in Cairo.

Middle Kingdom, 12th Dynasty, reign of Senusret II, ca. 1897-1878 BC. Now in the Egyptian Museum, Cairo. JE 30858