Take It Easy
An international team of researchers using the NASA/ESA Hubble Space Telescope and several other observatories have, for the first time, uncovered a galaxy in our cosmic neighbourhood that is missing most — if not all — of its dark matter. This discovery of the galaxy NGC 1052-DF2 challenges currently-accepted theories of and galaxy formation and provides new insights into the nature of dark matter. The results are published in Nature.
Astronomers using Hubble and several ground-based observatories have found a unique astronomical object: a galaxy that appears to contain almost no dark matter. Hubble helped to accurately confirm the distance of NGC 1052-DF2 to be 65 million light-years and determined its size and brightness. Based on these data the team discovered that NGC 1052-DF2 larger than the Milky Way, but contains about 250 times fewer stars, leading it to be classified as an ultra diffuse galaxy.
“I spent an hour just staring at this image,” lead researcher Pieter van Dokkum of Yale University says as he recalls first seeing the Hubble image of NGC 1052-DF2. “This thing is astonishing: a gigantic blob so sparse that you see the galaxies behind it. It is literally a see-through galaxy.”
Further measurements of the dynamical properties of ten globular clusters orbiting the galaxy allowed the team to infer an independent value of the galaxies mass. This mass is comparable to the mass of the stars in the galaxy, leading to the conclusion that NGC 1052-DF2 contains at least 400 times less dark matter than astronomers predict for a galaxy of its mass, and possibly none at all . This discovery is unpredicted by current theories on the distribution of dark matter and its influence on galaxy formation.
Red Norvo (born Kenneth Norville, March 31, 1908 – April 6, 1999) was one of jazz‘s early vibraphonists, known as “Mr. Swing”. He helped establish the xylophone, marimba, and vibraphone as jazz instruments. His recordings included “Dance of the Octopus”, “Bughouse”, “Knockin’ on Wood”, “Congo Blues”, and “Hole in the Wall”.
Red Norvo was born in Beardstown, Illinois. His career began in Chicago with a band called “The Collegians” in 1925. He played with many other bands, including an all-marimba band on the vaudeville circuit, and the bands of Paul Whiteman, Benny Goodman, Charlie Barnet, and Woody Herman. He recorded with Mildred Bailey (his wife), Billie Holiday, Dinah Shore and Frank Sinatra. Norvo and his wife were known as “Mr. and Mrs. Swing.” He appeared as himself in the film Screaming Mimi (1958) and in Ocean’s 11, accompanying Dean Martin while he sang “Ain’t That a Kick in the Head?“.
Green was born in Charleston, South Carolina on March 31, 1911. He was exposed to music from an early age, and learned the banjo before picking up the guitar in his early teenage years. A friend of his father by the name of Sam Walker taught a young Freddie to read music, and keenly encouraged him to keep up his guitar playing. Walker gave Freddie what was perhaps his first gig, playing with a local community group with whom Walker was an organizer. Another member of the group was William “Cat” Anderson, who went on to become an established trumpeter, working with notable figures such as Duke Ellington.
She was born Etta Lucille Reid in Caldwell County, North Carolina, of African-American, Native American, and European-American heritage. She began playing the guitar at the age of three. She was taught by her father, Boone Reid, a longtime player of the Piedmont blues on several instruments. He was her only musical instructor. She played both the 6-string and the 12-string acoustic guitar and the five-string banjo. Baker played the Piedmont blues for nearly ninety years.
Jaques Murigande, aka Mighty Popo, was born in Ngagara, a neighborhood in Bujumbura, Burundi populated largely by Rwandan and Congolese migrants and refugees.
In the House
About 70,000 light-years across, NGC 247 is a spiral galaxy smaller than our Milky Way. Measured to be only 11 million light-years distant it is nearby though. Tilted nearly edge-on as seen from our perspective, it dominates this telescopic field of view toward the southern constellation Cetus. The pronounced void on one side of the galaxy’s disk recalls for some its popular name, the Needle’s Eye galaxy. Many background galaxies are visible in this sharp galaxy portrait, including the remarkable string of four galaxies just below and left of NGC 247 known as Burbidge’s Chain. Burbidge’s Chain galaxies are about 300 million light-years distant. The deep image even reveals that the two leftmost galaxies in the chain are apparently interacting, joined by a faint bridge of material. NGC 247 itself is part of the Sculptor Group of galaxies along with the shiny spiral NGC 253.
Norah Jones (born Geetali Norah Shankar; March 30, 1979 Brooklyn, NY) is an American singer, songwriter, pianist and actress. She has won numerous awards and has sold more than 50 million records worldwide. Billboard named her the top jazz artist of the 2000–2009 decade. She has won nine Grammy Awards and was 60th on Billboard magazine’s artists of the 2000–2009 decade chart.
In 2002, Jones launched her solo music career with the release of Come Away with Me, a commercially successful and critically acclaimed album that was a fusion of jazz with country music and pop. It was certified Diamond, selling over 27 million copies. The record earned Jones five Grammy Awards, including the Album of the Year, Record of the Year, and Best New Artist. Her subsequent studio albums Feels Like Home, released in 2004; Not Too Late, released in 2007, and 2009’s The Fall all gained Platinum status, selling over a million copies each. They were also generally well received by critics. Jones’ fifth studio album, Little Broken Hearts, was released on April 27, 2012, and her most recent, sixth studio album, Day Breaks, was released on October 7, 2016. Jones made her film debut in My Blueberry Nights, which was released in 2007.