| Craspedida | |
|---|---|
 | |
| phase contrast image of Monosiga brevicollis | |
Scientific classification  | |
| Domain: | Eukaryota |
| Class: | Choanoflagellatea |
| Order: | Craspedida Cavalier-Smith, 1997, emend. Nitsche et al. 2011 |
| Families | |
Craspedida is an order of choanoflagellate, with members with an exclusively organic covering.
S. rosetta has been named for the rosette-shaped colonies formed by its cells. Recent studies show a bacterial sulfonolipid, called rosette inducing factor (RIF-1) produced by Algoriphagus machipongonensis triggers colony formation in S. rosetta.[ citation needed ]
The Rosetta Stone is a stele of granodiorite inscribed with three versions of a decree issued in 196 BC during the Ptolemaic dynasty of Egypt, on behalf of King Ptolemy V Epiphanes. The top and middle texts are in Ancient Egyptian using hieroglyphic and Demotic scripts, respectively, while the bottom is in Ancient Greek. The decree has only minor differences across the three versions, making the Rosetta Stone key to deciphering the Egyptian scripts.
Rosetta was a space probe built by the European Space Agency launched on 2 March 2004. Along with Philae, its lander module, Rosetta performed a detailed study of comet 67P/Churyumov–Gerasimenko (67P). During its journey to the comet, the spacecraft performed flybys of Earth, Mars, and the asteroids 21 Lutetia and 2867 Šteins. It was launched as the third cornerstone mission of the ESA's Horizon 2000 programme, after SOHO / Cluster and XMM-Newton.
The choanoflagellates are a group of free-living unicellular and colonial flagellate eukaryotes considered to be the closest living relatives of the animals. Choanoflagellates are collared flagellates, having a funnel shaped collar of interconnected microvilli at the base of a flagellum. Choanoflagellates are capable of both asexual and sexual reproduction. They have a distinctive cell morphology characterized by an ovoid or spherical cell body 3–10 µm in diameter with a single apical flagellum surrounded by a collar of 30–40 microvilli. Movement of the flagellum creates water currents that can propel free-swimming choanoflagellates through the water column and trap bacteria and detritus against the collar of microvilli, where these foodstuffs are engulfed. This feeding provides a critical link within the global carbon cycle, linking trophic levels. In addition to their critical ecological roles, choanoflagellates are of particular interest to evolutionary biologists studying the origins of multicellularity in animals. As the closest living relatives of animals, choanoflagellates serve as a useful model for reconstructions of the last unicellular ancestor of animals.
Rosetta or Rashid is a port city of the Nile Delta, 65 km (40 mi) east of Alexandria, in Egypt's Beheira governorate. The Rosetta Stone was discovered there in 1799.
67P/Churyumov–Gerasimenko is a Jupiter-family comet. It is originally from the Kuiper belt and has an orbital period of 6.45 years as of 2012, a rotation period of approximately 12.4 hours, and a maximum velocity of 135,000 km/h. Churyumov–Gerasimenko is approximately 4.3 by 4.1 km at its longest and widest dimensions. It was first observed on photographic plates in 1969 by Soviet astronomers Klim Ivanovych Churyumov and Svetlana Ivanovna Gerasimenko, after whom it is named. It most recently came to perihelion on 2 November 2021, and will next come to perihelion on 9 April 2028.
Sister Rosetta Tharpe was an American singer, songwriter and guitarist. She gained popularity in the 1930s and 1940s with her gospel recordings, characterized by a unique mixture of spiritual lyrics and electric guitar. She was the first great recording star of gospel music, and was among the first gospel musicians to appeal to rhythm and blues and rock and roll audiences, later being referred to as "the original soul sister" and "the Godmother of rock and roll". She influenced early rock-and-roll musicians including Little Richard, Johnny Cash, Carl Perkins, Chuck Berry, Elvis Presley, Jerry Lee Lewis, and also later guitarists, such as Eric Clapton.
Philae was a robotic European Space Agency lander that accompanied the Rosetta spacecraft until it separated to land on comet 67P/Churyumov–Gerasimenko, ten years and eight months after departing Earth. On 12 November 2014, Philae touched down on the comet, but it bounced when its anchoring harpoons failed to deploy and a thruster designed to hold the probe to the surface did not fire. After bouncing off the surface twice, Philae achieved the first-ever "soft" (nondestructive) landing on a comet nucleus, although the lander's final, uncontrolled touchdown left it in a non-optimal location and orientation.
Rosetta is a space probe designed to rendezvous with the comet 67P/Churyumov–Gerasimenko, perform flybys of two asteroids, and carry lander Philae until its landing on 67P. This page records a detailed timeline of this mission.
Rosetta is a city in Egypt.
Rosette is the French diminutive of rose. It may refer to:
Rosetta@home is a volunteer computing project researching protein structure prediction on the Berkeley Open Infrastructure for Network Computing (BOINC) platform, run by the Baker lab. Rosetta@home aims to predict protein–protein docking and design new proteins with the help of about fifty-five thousand active volunteered computers processing at over 487,946 GigaFLOPS on average as of September 19, 2020. Foldit, a Rosetta@home videogame, aims to reach these goals with a crowdsourcing approach. Though much of the project is oriented toward basic research to improve the accuracy and robustness of proteomics methods, Rosetta@home also does applied research on malaria, Alzheimer's disease, and other pathologies.
Johan David Åkerblad was a Swedish diplomat and orientalist.
Princess Rosette is a French literary fairy tale written by Madame d'Aulnoy. Andrew Lang included it in The Red Fairy Book.
A Rosetta orbit is a complex type of orbit.
Lost in Alaska is a 1952 American film starring comedy duo Abbott and Costello.
No Trifling with Love is a 1977 French drama film directed by Caroline Huppert. It is based on the theatrical work of Alfred de Musset of the same name.
The Nubayrah Stele is a mutilated copy of the Decree of Memphis on a limestone stele. The same decree is found upon the Rosetta Stone. From 1848, it was known that a partial copy of the Decree was on a wall at the Temple of Philae, but overwritten in many places, by scenes, or damaged.
Rosette Sharma, also known by her stage names Rosette, Rosette Luve, Rozette, and Rosetta, is a Canadian singer and songwriter. Born in October 1982.
"A Little Green Rosetta", by Frank Zappa, is the final song on the 1979 concept album Joe's Garage Acts II & III. The main character from this triple-album rock opera is faced with the decline of the music industry, and is forced to work on an assembly line placing little frosted rosettes on top of muffins at the Utility Muffin Research Kitchen facility
Salpingoeca rosetta is a species of Choanoflagellates in the family Salpingoecidae. It is a rare marine eukaryote consisting of a number of cells embedded in a jelly-like matrix. This organism demonstrates a very primitive level of cell differentiation and specialization. This is seen with flagellated cells and their collar structures that move the cell colony through the water.
Similar low level cellular differentiation and specification can also be seen in sponges. They also have collar cells and amoeboid cells arranged in a gelatinous matrix.
Unlike S. rosetta, sponges also have other cell-types that can perform different functions. Also, the collar cells of sponges beat within canals in the sponge body, whereas Salpingoeca rosetta's collar cells reside on the inside and it lacks internal canals. Despite these minor differences, there is strong evidence that Proterospongia and Metazoa are highly related.
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