Solar System belts are asteroid and comet belts that orbit the Sun in the Solar System in interplanetary space. The Solar System belts' size and placement are mostly a result of the Solar System having four giant planets: Jupiter, Saturn, Uranus and Neptune far from the Sun. The giant planets must be in the correct place, not too close or too far from the star for a system to have Solar System belts.
Formation
The Solar System belts were formed in the formation and evolution of the Solar System. The Grand tack hypothesis is a model of the unique placement of the giant planets and the Solar System belts. Most giant planets found outside the Solar System, exoplanets, are inside the snow line, and are called Hot Jupiters. Thus in normal planetary systems giant planets form beyond snow line and then migrated towards the star. A small percent of giant planets migrate far from the star. In both types of migrations, the Solar System belts are lost in these planetary migrations. The Grand tack hypothesis explains how in the Solar System giant planets migrated in unique way to form the Solar System belts and near circular orbit of planets around the Sun.
Solar System belts
The asteroid and comet belts orbit the Sun from the inner rocky planets into outer parts of the Solar System, interstellar space. An astronomical unit, or AU, is the distance from Earth to the Sun, which is approximately 150 billion meters (93 million miles). Small Solar System objects are classified by their orbits:
* Main Asteroid belt (main belt), between Mars and Jupiter, in near circular orbit, 2.2 to 3.2 AU
** Hungaria asteroids, small group, 1.78 to 2.00 AU
** Alinda asteroids, small group, 2.5 AU in elliptical orbits
** Hilda asteroid small group just inside Jupiter, 4.0 AU
* Kuiper belt large belt, 43 to 64.5 AU
* Scattered disc small group, 21.5 to 215 AU
* Sednoid (inner Oort cloud objects) small group of four or more, high elliptical orbits, 47.8 to 80 AU
* Extreme trans-Neptunian objects 150 to 250 AU
* Hills cloud a large hypothetical circumstellar disc
Planets
Solar System planets and dwarf planets listed for distances comparison to belts. The Solar System planets all orbit in near circular orbits.
Planets:
*Mercury 0.39 AU
*Venus 0.72 AU
*Earth 1 AU
*Mars 1.52 AU
*Jupiter 5.2 AU
*Saturn 9.54 AU
*Uranus 19.2 AU
*Neptune 30.06 AU
Dwarf planets:
Dwarf planets, other than Ceres, are plutoids that have elliptical orbits:
*Ceres 2.8 AU, in the asteroid belt
*Orcus 39.4 AU, in the Kuiper belt
*Pluto 39 AU, Kuiper belt (a planet until 2006)
*Haumea 43 AU, Kuiper belt
*Makemake 38.1 to 52.7 AU, Kuiper belt
*Eris 38 to 95.6 AU, Scattered disk
*Gonggong 34 to 101 AU, Scattered disc,
*Quaoar 41.9 to 45.4 AU, Kuiper belt
*Sedna 76 to 937 AU, A sednoid
Formation
The Solar System belts were formed in the formation and evolution of the Solar System. The Grand tack hypothesis is a model of the unique placement of the giant planets and the Solar System belts. Most giant planets found outside the Solar System, exoplanets, are inside the snow line, and are called Hot Jupiters. Thus in normal planetary systems giant planets form beyond snow line and then migrated towards the star. A small percent of giant planets migrate far from the star. In both types of migrations, the Solar System belts are lost in these planetary migrations. The Grand tack hypothesis explains how in the Solar System giant planets migrated in unique way to form the Solar System belts and near circular orbit of planets around the Sun.
Solar System belts
The asteroid and comet belts orbit the Sun from the inner rocky planets into outer parts of the Solar System, interstellar space. An astronomical unit, or AU, is the distance from Earth to the Sun, which is approximately 150 billion meters (93 million miles). Small Solar System objects are classified by their orbits:
* Main Asteroid belt (main belt), between Mars and Jupiter, in near circular orbit, 2.2 to 3.2 AU
** Hungaria asteroids, small group, 1.78 to 2.00 AU
** Alinda asteroids, small group, 2.5 AU in elliptical orbits
** Hilda asteroid small group just inside Jupiter, 4.0 AU
* Kuiper belt large belt, 43 to 64.5 AU
* Scattered disc small group, 21.5 to 215 AU
* Sednoid (inner Oort cloud objects) small group of four or more, high elliptical orbits, 47.8 to 80 AU
* Extreme trans-Neptunian objects 150 to 250 AU
* Hills cloud a large hypothetical circumstellar disc
Planets
Solar System planets and dwarf planets listed for distances comparison to belts. The Solar System planets all orbit in near circular orbits.
Planets:
*Mercury 0.39 AU
*Venus 0.72 AU
*Earth 1 AU
*Mars 1.52 AU
*Jupiter 5.2 AU
*Saturn 9.54 AU
*Uranus 19.2 AU
*Neptune 30.06 AU
Dwarf planets:
Dwarf planets, other than Ceres, are plutoids that have elliptical orbits:
*Ceres 2.8 AU, in the asteroid belt
*Orcus 39.4 AU, in the Kuiper belt
*Pluto 39 AU, Kuiper belt (a planet until 2006)
*Haumea 43 AU, Kuiper belt
*Makemake 38.1 to 52.7 AU, Kuiper belt
*Eris 38 to 95.6 AU, Scattered disk
*Gonggong 34 to 101 AU, Scattered disc,
*Quaoar 41.9 to 45.4 AU, Kuiper belt
*Sedna 76 to 937 AU, A sednoid
George D. Ellsworth (1756 - March 28, 1840) was an American military private of the Continental Army who served in the American Revolutionary War and fought at the Battle of Saratoga. George was the grandfather of Col. Elmer Ellsworth, who was the first Union Officer to die in the Civil War.
George D. Ellsworth, was born in 1756 to Charles G. Ellsworth and Janette McClaren. In 1775 George moved to Halfmoon, New York. George then married Sarah Reynolds in 1786 in New York. George and Sarah had 14 kids one including Ephraim D. Ellsworth who was the father of Elmer E. Ellsworth. George joined the Continental Army in 1777 during the American Revolutionary War at age 15 and served as a private, looking out for Tories with his regiment. George, enlisted after General. John Burgoyne's invasion and was present at his surrender at The Battle of Saratoga. George served in the New York State Militia commanded by Capt. Joshua Taylor for 8 months and 27 days. The Militia served in the . commanded by Col. Jacobus Van Schoonhoven. George was granted a land bounty for his service in Rose, New York and moved there with Sarah Reynolds. George died from natural causes on March 28th, 1840, at 84 years old and was buried at Rose Cemetery in Rose, New York.
Career
Family
George D. Ellsworth, was born in 1756 to Charles G. Ellsworth and Janette McClaren. In 1775 George moved to Halfmoon, New York. George then married Sarah Reynolds in 1786 in New York. George and Sarah had 14 kids one including Ephraim D. Ellsworth who was the father of Elmer E. Ellsworth. George joined the Continental Army in 1777 during the American Revolutionary War at age 15 and served as a private, looking out for Tories with his regiment. George, enlisted after General. John Burgoyne's invasion and was present at his surrender at The Battle of Saratoga. George served in the New York State Militia commanded by Capt. Joshua Taylor for 8 months and 27 days. The Militia served in the . commanded by Col. Jacobus Van Schoonhoven. George was granted a land bounty for his service in Rose, New York and moved there with Sarah Reynolds. George died from natural causes on March 28th, 1840, at 84 years old and was buried at Rose Cemetery in Rose, New York.
Career
Family
Parsoft Interactive, or simply Parsoft, was a computer game company known for their series of technically advanced combat flight simulators. The name comes from Eric Parker, founder and chief developer. Their first release was Hellcats Over the Pacific on the Apple Macintosh in 1991, which they followed in 1992 with Missions at Leyte Gulf, an expansion pack. In 1995 they released ' to critical acclaim on the Mac, following that up with A-10 Cuba in 1996. Partnering with Activision, A-10 Cuba was also released as a stand-alone game for Microsoft Windows, and this partnership led to the Windows-only 1999 release of Fighter Squadron: The Screamin' Demons Over Europe (SDoE). The pressure of the SDoE release led to the programmers going their separate ways, and by 2002 the company was dissolved.
Suseela Prabhakaran is an Indian ophthalmologist and chief ophthalmic surgeon at Divya Prabha Eye Hospital in Trivandrum, India. She started her career as a lecturer in ophthalmology in the Department of Medical Education at the state government of Kerala.
She was actively involved with the improvement of healthcare services in Kerala, especially in the field of ophthalmology. Through NGOs like the World Health Organization and Innerwheel, she was able to introduce major advances in eye care.
Prabhakaran was instrumental in upgrading the Government Eye Hospital in Trivandrum to a Regional Institute of Ophthalmology. She was also the Advisor in Ophthalmology to the state government.
She established Divya Prabha Eye Hospital on leaving government service.
Awards received
Suseela Prabhakaran has been given many awards for her contributions to the ophthalmological field. She received a Carapet Gold medal for securing first rank in the state for the SSLC examination. She was a gold medallist for the final year in her Bachelor of Medicine, Bachelor of Surgery program at the University of Kerala. The World Health Organization granted Prabhakaran a Fellowship Award in Ophthalmic Microsurgery in 1981. She has also received a Knight of the Blind award from Lions Club International, a Platinum Jubilee Award from the Indian Red Cross Society, and the Sevana Ratna award from Nethaji Smaraka Samithi.
Scientific contributions
Prabhakaran has written several articles in scientific journals and has been cited in the Indian Science Abstracts. Of the 45 million blind people in the world, 12 million of them live in India. Prabhakaran has been able to improve eye health in Kerala by performing cornea graft surgeries and many other procedures that correct or improve cataracts on patients. She also advocates for eye donation, which has been a major topic of interest for advocates of corneal grafting.
Divya Prabha Eye Hospital
Prabhakaran founded the Divya Prabha Eye Hospital to help improve the quality of vision among people in Kerala.<ref name":0" /> The facility was initially established as a clinic by Dr. N. Prabhakaran, who wanted it to provide the best care for patients at an affordable price.<ref name":0" /> At first, it did not have the resources necessary for surgery, so patients requiring surgery were directed to a nearby hospital.<ref name=":0" />
Dr. N. Prabhakaran died a year after the clinic opened, and Suseela Prabhakaran took over the project. She turned it into a full hospital able to accommodate cataract and glaucoma surgeries,<ref name":0" /> two of the main eye problems in India.<ref name":1" /> The operating theatre includes separate areas designed for septic procedures and a sterile air corridor.<ref name=":0" />
Prabhakaran also continues to treat people who cannot afford surgery.
She was actively involved with the improvement of healthcare services in Kerala, especially in the field of ophthalmology. Through NGOs like the World Health Organization and Innerwheel, she was able to introduce major advances in eye care.
Prabhakaran was instrumental in upgrading the Government Eye Hospital in Trivandrum to a Regional Institute of Ophthalmology. She was also the Advisor in Ophthalmology to the state government.
She established Divya Prabha Eye Hospital on leaving government service.
Awards received
Suseela Prabhakaran has been given many awards for her contributions to the ophthalmological field. She received a Carapet Gold medal for securing first rank in the state for the SSLC examination. She was a gold medallist for the final year in her Bachelor of Medicine, Bachelor of Surgery program at the University of Kerala. The World Health Organization granted Prabhakaran a Fellowship Award in Ophthalmic Microsurgery in 1981. She has also received a Knight of the Blind award from Lions Club International, a Platinum Jubilee Award from the Indian Red Cross Society, and the Sevana Ratna award from Nethaji Smaraka Samithi.
Scientific contributions
Prabhakaran has written several articles in scientific journals and has been cited in the Indian Science Abstracts. Of the 45 million blind people in the world, 12 million of them live in India. Prabhakaran has been able to improve eye health in Kerala by performing cornea graft surgeries and many other procedures that correct or improve cataracts on patients. She also advocates for eye donation, which has been a major topic of interest for advocates of corneal grafting.
Divya Prabha Eye Hospital
Prabhakaran founded the Divya Prabha Eye Hospital to help improve the quality of vision among people in Kerala.<ref name":0" /> The facility was initially established as a clinic by Dr. N. Prabhakaran, who wanted it to provide the best care for patients at an affordable price.<ref name":0" /> At first, it did not have the resources necessary for surgery, so patients requiring surgery were directed to a nearby hospital.<ref name=":0" />
Dr. N. Prabhakaran died a year after the clinic opened, and Suseela Prabhakaran took over the project. She turned it into a full hospital able to accommodate cataract and glaucoma surgeries,<ref name":0" /> two of the main eye problems in India.<ref name":1" /> The operating theatre includes separate areas designed for septic procedures and a sterile air corridor.<ref name=":0" />
Prabhakaran also continues to treat people who cannot afford surgery.