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Measuring the distance to truly remote objects like galaxies, quasars and galaxy clusters is a crucial task in astrophysics, particularly when it comes to studying the early Universe, but it’s a difficult one. Only in the case of a few nearby objects like the Sun, planets and some nearby stars can we measure their distances directly. Beyond that, various indirect methods need to be used; one of the most important is by examining Type Ia supernovae, and this is where the NASA/ESA Hubble Space Telescope comes in.
NGC 3810, the galaxy featured in this image, was the host of a Type Ia supernova in 2022. In early 2023 Hubble focused on this and a number of other galaxies to closely examine recent Type Ia supernovae. This kind of supernova results from a white dwarf exploding, and they all have a very consistent brightness. That allows them to be used to measure distances: we know how bright a Type Ia supernova should be, so we can tell how far away it must be from how dim it appears. One uncertainty in this method is that intergalactic dust in between Earth and a supernova blocks some of its light. How do you know how much of the reduction in light is caused by distance, and how much by dust? With the help of Hubble, there’s a clever workaround: take images of the same Type Ia supernovae in ultraviolet light, which is almost completely blocked by dust, and in infrared light, which passes through dust almost unaffected. By carefully noting how much light comes through at each wavelength, the relationship between supernova brightness and distance can be calibrated to account for dust. Hubble can observe both these wavelengths of light in great detail with the same instrument. That makes it the perfect tool for this experiment, and indeed, some of the data used to make this beautiful image of NGC 3810 were focused on its 2022 supernova. You can see it as a point of light just below the galactic nucleus, or in the annotated image here.
There are many ways to measure cosmic distances; because Type Ia supernovae are so bright, they are one of the most useful and accurate tools, when they’re spotted. Many other methods must be used as well, either as an independent check against other distance measurements or to measure at much closer or farther distances. One such method that also works for galaxies is comparing their rotation speed to their brightness; based on that method, NGC 3810 is found to be 50 million light-years from Earth.
[Image Description: A spiral galaxy seen almost face-on. Large spiral arms whirl out from its centre, filling the scene. They glow faintly blue from the stars within, with some small bright patches of blue and pink marking areas of star formation. They are overlaid with thin filaments of dark reddish dust that block light. The galaxy’s centre shines brightly white.]
John Lee Johnson (born July 8, 1944), frequently known by the stage names Jai Johanny Johanson and Jaimoe, is an American drummer and percussionist. He is best known as one of the founding members of the Allman Brothers Band and, with the death of Dickey Betts on April 18, 2024, he is the last surviving original member of the band.
Johanson played with a number of Muscle Shoals and Memphis soul acts in the early-to-mid 1960s, such as Otis Redding and Sam and Dave, as a session and touring drummer. While recording and touring he would meet the various members of what would become the Allman Brothers Band. One of the few bands at the time to employ two drummers, alongside Butch Trucks, they drew on R&B, blues, jazz, country, and rock to create a unique variety of southern rock. Upon the death of founding bassist Berry Oakley in 1972, Johanson brought in frequent collaborator Lamar Williams to replace him.
more...Johnnie Clyde Johnson (July 8, 1924 – April 13, 2005) was an American pianist who played jazz, blues, and rock and roll. His work with Chuck Berry led to his induction into the Rock and Roll Hall of Fame. He was posthumously awarded the Congressional Gold Medal for breaking racial barriers in the military as a Montford Point Marine, where he endured racism and inspired social change while integrating the previously all-white Marine Corps during World War II.
Johnson was born in Fairmont, West Virginia, United States. He began playing the piano in 1928. During World War II, he joined the United States Marine Corps and became a member of Bobby Troup‘s all-serviceman jazz orchestra: the Barracudas. After his service, Johnson moved to Detroit and then Chicago, where he sat in with many notable artists, including Muddy Waters and Little Walter.
more...Louis Thomas Jordan (July 8, 1908 – February 4, 1975) was an American saxophonist, multi-instrumentalist, songwriter and bandleader who was popular from the late 1930s to the early 1950s. Known as “the King of the Jukebox“, he earned his highest profile towards the end of the swing era. He was inducted into the Rock and Roll Hall of Fame as an “early influence” in 1987.
Specializing in the alto sax, Jordan played all forms of the saxophone, as well as piano and clarinet. He also was a talented singer with great comedic flair, and fronted his own band for more than twenty years. He duetted with some of the biggest solo singing stars of his time, including Bing Crosby, Ella Fitzgerald and Louis Armstrong.
more...Found among the rich starfields of the Milky Way, star cluster NGC 7789 lies about 8,000 light-years away toward the constellation Cassiopeia. A late 18th century deep sky discovery of astronomer Caroline Lucretia Herschel, the cluster is also known as Caroline’s Rose. Its visual appearance in small telescopes, created by the cluster’s complex of stars and voids, is suggestive of nested rose petals. Now estimated to be 1.6 billion years young, the galactic or open cluster of stars also shows its age. All the stars in the cluster were likely born at the same time, but the brighter and more massive ones have more rapidly exhausted the hydrogen fuel in their cores. These have evolved from main sequence stars like the Sun into the many red giant stars shown with a yellowish cast in this color composite. Using measured color and brightness, astronomers can model the mass and hence the age of the cluster stars just starting to “turn off” the main sequence and become red giants. Over 50 light-years across, Caroline’s Rose spans about half a degree (the angular size of the Moon) near the center of the sharp telescopic image.
Sir Richard Starkey MBE (born 7 July 1940), known professionally as Ringo Starr, is an English musician, songwriter and actor who achieved international fame as the drummer for the Beatles. Starr occasionally sang lead vocals with the group, usually for one song on each album, including “Yellow Submarine” and “With a Little Help from My Friends“. He also wrote and sang the Beatles songs “Don’t Pass Me By” and “Octopus’s Garden“, and is credited as a co-writer of four others.
Starr was afflicted by life-threatening illnesses during childhood, with periods of prolonged hospitalisation. As a teenager Starr became interested in the UK skiffle craze and developed a fervent admiration for the genre. In 1957, he co-founded his first band, the Eddie Clayton Skiffle Group, which earned several prestigious local bookings before the fad succumbed to American rock and roll around early 1958. When the Beatles formed in 1960, Starr was a member of another Liverpool group, Rory Storm and the Hurricanes. After achieving moderate success in the UK and Hamburg, he quit the Hurricanes when he was asked to join the Beatles in August 1962, replacing Pete Best.
In addition to the Beatles’ films, Starr has acted in numerous others. After the Beatles disbanded, he released several successful singles including the US top-ten hit “It Don’t Come Easy“, and number ones “Photograph” and “You’re Sixteen“. His most successful UK single was “Back Off Boogaloo“, which peaked at number two. He achieved commercial and critical success with his 1973 album Ringo, which was a top-ten release in both the UK and the US. Starr has also featured in numerous documentaries, hosted television shows, narrated the first two series of the children’s television programme Thomas & Friends and portrayed “Mr. Conductor” during the first season of the PBS children’s television series Shining Time Station. Since 1989, he has toured with thirteen variations of Ringo Starr & His All-Starr Band.
Starr’s playing style, which emphasised feel over technical virtuosity, influenced many drummers to reconsider their playing from a compositional perspective. He also influenced various modern drumming techniques, such as the matched grip, tuning the drums lower, and using muffling devices on tonal rings. In his opinion, his finest recorded performance was on the Beatles’ “Rain“. In 1999, he was inducted into the Modern Drummer Hall of Fame. In 2011, Rolling Stone readers named him the fifth-greatest drummer of all time. He was inducted twice into the Rock and Roll Hall of Fame, as a Beatle in 1988 and as a solo artist in 2015, and appointed a Knight Bachelor in the 2018 New Year Honours for services to music.
more...Josef Erich Zawinul (7 July 1932 – 11 September 2007) was an Austrian jazz and jazz fusion keyboardist and composer. First coming to prominence with saxophonist Cannonball Adderley, Zawinul went on to play with Miles Davis and to become one of the creators of jazz fusion, a musical genre that combined jazz with rock. He co-founded the groups Weather Report and The Zawinul Syndicate. He pioneered the use of electric piano and synthesizer, and was named “Best Electric Keyboardist” twenty-eight times by the readers of DownBeat magazine.
Zawinul grew up in Vienna, Austria. Accordion was his first instrument. When he was six or seven, he studied clarinet, violin, and piano at the Vienna Conservatory.
more...Henry Mobley (July 7, 1930 – May 30, 1986) was an American tenor saxophonist and composer. Mobley was described by Leonard Feather as the “middleweight champion of the tenor saxophone”, a metaphor used to describe his tone, that was neither as aggressive as John Coltrane nor as mellow as Lester Young, and his style that was laid-back, subtle and melodic, especially in contrast with players such as Coltrane and Sonny Rollins. The critic Stacia Proefrock claimed him “one of the most underrated musicians of the bop era.” Mobley’s compositions include “Double Exposure”, “Soul Station”, and “Dig Dis”.
Mobley was born in Eastman, Georgia, but was raised in Elizabeth, New Jersey, near Newark.
more...Lloyd “Tiny” Grimes (July 7, 1916 – March 4, 1989) was an American jazz and R&B guitarist. He was a member of the Art Tatum Trio from 1943 to 1944, was a backing musician on recording sessions, and later led his own bands, including a recording session with Charlie Parker. He is notable for playing the electric tenor guitar, a four-stringed instrument.
Grimes was born in Newport News, Virginia, United States, and began his musical career playing drums and one-fingered piano. In 1938 he took up the electric four-string tenor guitar. In 1940 he joined the Cats and the Fiddle as guitarist and singer.In 1943 he joined the Art Tatum Trio as guitarist and made a number of recordings with Tatum.
more...“Time is always moving on; nothing can stop it. We can’t change the past, but we can shape the future. The more compassionate you are, the more you will find inner peace. From my own limited experience I have found that the greatest degree of inner tranquility comes from the development of love and compassion.” Dali Lama
Spiral galaxy M83 lies a mere twelve million light-years away, near the southeastern tip of the very long constellation Hydra. About 40,000 light-years across, M83 is known as the Southern Pinwheel for its pronounced spiral arms. But the wealth of reddish star forming regions found near the edges of the arms’ thick dust lanes, also suggest another popular moniker for M83, the Thousand-Ruby Galaxy. This new deep telescopic digital image also records the bright galaxy’s faint, extended halo. Arcing toward the bottom of the cosmic frame lies a stellar tidal stream, debris drawn from massive M83 by the gravitational disruption of a smaller, merging satellite galaxy. Astronomers David Malin and Brian Hadley found the elusive star stream in the mid 1990s by enhancing photographic plates.
Michael Shrieve (born July 6, 1949 San Fransisco) is an American drummer, percussionist, and composer. He is best known as the drummer of the rock band Santana, playing on the band’s first seven albums from 1969 to 1974. At age 20, Shrieve was the second youngest musician to perform at Woodstock. His drum solo during “Soul Sacrifice” in the Woodstock film has been described as “electrifying”, although he considers his solo during the same piece in 1970 at Tanglewood the superior performance.
more...Louie Bellson (born Luigi Paolino Alfredo Francesco Antonio Balassoni, July 6, 1924 – February 14, 2009 Rock Falls, Ill), often seen in sources as Louis Bellson, although he himself preferred the spelling Louie, was an American jazz drummer. He was a composer, arranger, bandleader, and jazz educator, and is credited with pioneering the use of two bass drums.
Bellson and his wife, actress and singer Pearl Bailey (married from 1952 until Bailey’s death in 1990), had the second highest number of appearances at the White House(only Bob Hope had more).
Bellson was a vice president at Remo, a drum company. He was inducted into the Modern Drummer Hall of Fame in 1985.
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