Delphinus is a genus of dolphin, commonly known as the "Common Dolphin". There are two species in this genus, the Short-beaked Common Dolphin ("Delphinus delphis"), and the Long-beaked Common Dolphin ("Delphinus capensis"). But some studies say that there is a third species, the "Arabian Common Dolphin" ("Delphinus tropicalis"), which has a long, thin beak and is found in the Indian Ocean and the Red Sea.
Both, the Short-beaked Common Dolphin and the Long-beaked Common Dolphin are medium-sized dolphins. Adults grow between the lengths of 1.9 to 2.5 meters (6.2 to 8.2 ft), and weigh around 80 to 235 kg (180 to 520 lb). Males are longer and heavier than females. They are dark grey on the back, the belly is white, and the sides are light grey, gold, or yellow in color.
Common Dolphins live in both, warm temperate and tropical waters from 40°N to 50°S. They eat many species of fish like sardines, herrings, and bonitos, octopuses and squids. They are fast swimmers, swimming up to the speed of 60 km per hour. They have made dives up to 200 meters (660 ft) deep.
Common Dolphins are pregnant for around 10 to 11 months before giving birth to young which are 70 to 100 centimeters (2.3 to 3.3 ft) long, and weigh around 10 kg (22 Ib). They give birth to 1 young at a time. Females mature between the age of 2 and 7 years old and males mature between the age of 3 and 12 years old. They live for around 35-40 years.
At first it was thought that there was only one species of the Delphinus genus, the Short-beaked Common Dolphin ("Delphinus Delphis"). But later, studies showed that there was another species, the Long-beaked Common Dolphin ("Delphinus Capensis"). The difference between the Short-beaked Common Dolphin and the Long-beaked Common Dolphin, is that the Short-beaked Common Dolphin is smaller in size and has a smaller beak than the Long-beaked Common Dolphin. Now scientist say there is a third species, the Arabian Common Dolphin ("Delphinus Tropicalis") which has a long, thin beak and lives in the Red Sea and the Indian Ocean, but it is not confirmed.
Elizabeth Berkley
Elizabeth Berkley (July 28, 1972, in Farmington Hills, Michigan) is an American movie and television actress. She is best known for her role in "Saved by the Bell". She also acted in the 1995 erotic drama "Showgirls". Most of her movies are independent movies.
Cartwheel galaxy
The Cartwheel galaxy (also known as "ESO 350-40") is a lenticular galaxy about 500 million light-years away in the constellation Sculptor.
It is about 150,000 light years across, slightly larger than the Milky Way. It has a mass of about solar masses, and rotates at .
It was discovered by Fritz Zwicky in 1941. Zwicky said his discovery was "one of the most complicated structures awaiting its explanation on the basis of stellar dynamics".
The Cartwheel galaxy shows radio and optical spokes, but they are not the same spokes.
The galaxy was a normal spiral galaxy before it had a collision with a smaller galaxy about 200 million years ago. When the nearby galaxy passed through the Cartwheel Galaxy, the power of the collision sent a strong shock wave through the galaxy. Moving at high speed, the shock wave moved gas and dust. This made a starburst around the galaxy's center. This explains the blue colored ring around the center, bright section. It can be seen that the galaxy is beginning to take the shape of a normal spiral galaxy again, as spiral arms (The spokes) are spreading out from a central core.
There are other possible explanations of the ring-like appearance.
Messier 49
Messier 49 (also known as "NGC 4472") is an elliptical galaxy about away in the constellation of Virgo. This galaxy was discovered by French astronomer Charles Messier in 1771. Messier 49 is 4.1° west-southwest of the star Epsilon Virginis.
Messier 49 was the first member of the Virgo Cluster of galaxies to be discovered. It is the most luminous member of that cluster and is brighter than any galaxy closer to the Earth. This galaxy is part of the smaller Virgo B subcluster 4.5° away from the dynamic center of the Virgo Cluster, which is centered on Messier 87. Messier 49 is gravitationally interacting with the dwarf irregular galaxy UGC 7636.
Messier 49 has the radio emission of a normal galaxy. However, the core of the galaxy is emitting X-rays, which suggests the presence of a supermassive black hole of , or 565 million times the mass of the Sun. To the southwest of the core, the luminous outline of the galaxy can be traced out to a distance of 260 thousand parsecs. The only supernova event observed within this galaxy is SN 1969Q, discovered in June 1969.
This galaxy has a large collection of globular clusters, estimated at about 5,900. However, this count is far exceeded by the 13,450 globular clusters orbiting the supergiant elliptical galaxy Messier 87. On average, the globular clusters of M 49 are about 10 billion years old. Between 2000–2009, strong evidence for a stellar mass black hole was discovered in an M 49 cluster. A second candidate was announced in 2011.
National Astronomical Observatory of Japan
, also known as NAOJ, is a Japanese astronomy research organization. NAOJ has several facilities in Japan; and it has an observatory on Mauna Kea in Hawaii.
NAOJ was established in 1988. Three institutions merged. They were the
In 2004, NAOJ became part of the National Institutes of Natural Sciences (NINS). NINS was created to promote collaboration among researchers of the five constituent institutes. NAOJ merged with four other national institutes. They were
Short-beaked common dolphin
The short-beaked common dolphin ("Delphinus delphis") is one of the two species of the genus, Delphinus. It is found in warm temperate and tropical waters of the Atlantic and Pacific Ocean. It is also found in the Caribbean and the Mediterranean Sea.
The short-beaked common dolphin is a medium-sized dolphin, but is smaller than the other species of the genus Delphinus, the long-beaked common dolphin. Adults grow between the lengths of 1.6 to 2 meters (5.2 to 6.6 ft), and weigh between 70 and 235 kg (150 to 520 Ib). Short-beaked common dolphins are said to be heavier than the Long-beaked common dolphin. The back of the short-beaked common dolphin is dark grey, the belly is white, and the sides are light grey, gold or yellow.
Short-beaked common dolphins eat fish like cod, herrings, sardines, and flying fish. They also eat octopuses, squids, cuttlefish, and crustaceans.
Female short-beaked common dolphins are pregnant for around 10 to 11 months before giving birth to young which are 70 to 100 cm (2.3 to 3.3 ft) long, and weigh about 10 kg (22 Ib). Males mature at the age of between 3 and 12 years old, and females mature at the age of between 2 and 7 years old. They live for around 35 years, but some live for only 22 years.
The short-beaked common dolphin was first thought to be the only species of the genus, Delphinus. But soon, studies show that there is another species, the long-beaked common dolphin ("Delphinus capensis"). The difference between the short-beaked common dolphin and the long-beaked common dolphin is that the short-beaked common dolphin is smaller in size and has a smaller beak than the long-beaked common dolphin.
Cheryl Tiegs
Cheryl Rae Tiegs (born September 25 1947 in Breckenridge, Minnesota) is an American fashion model and actress. She is best known for her modeling for the "Sports Illustrated Swimsuit Issue". Tiegs has been on the cover of the "SI" Swimsuit Issue three times. She has also been on the covers of many other magazines. These include "Vogue", "Glamour", "Harper's" and "Time". Tiegs performed as herself in the sitcom "Just Shoot Me".
From 1970 to 1979, she was married to movie director Stan Dragoti.
Patrika Darbo
Patrika Darbo (born April 6, 1948 in Jacksonville, Florida) is an American movie and television actress. She played Nancy Wesley in the television soap opera "Days of Our Lives". She also acted in independent movies.