Stephen William Hawking

• Stephen William Hawking, CH, CBE, FRS, FRSA (was born on 8 January 1942 - 300 years after the death of Galileo in Oxford, England) is a British theoretical physicist. Hawking is the Lucasian Professor of Mathematics at the University of Cambridge, and a Fellow of Gonville and Caius College, Cambridge. He is known for his contributions to the fields of cosmology and quantum gravity, especially in the context of black holes, and his popular works in which he discusses his own theories and cosmology in general. These include the runaway popular science bestseller A Brief History of Time, which stayed on the British Sunday Times bestseller list for a record-breaking 237 weeks.
  His key scientific works to date have included providing, with Roger Penrose, theorems regarding singularities in the framework of general relativity, and the theoretical prediction that black holes should emit radiation, which is today known as Hawking radiation, or sometimes as Bekenstein-Hawking radiation.His scientific career spans more than 40 years and his books and public appearances have made him an academic celebrity and world-renowned theoretical physicist. He is an Honorary Fellow of the Royal Society of Arts.Hawking is disabled by amyotrophic lateral sclerosis (ALS), commonly known in the United States as Lou Gehrig's Disease. The illness has progressed over the years and he is now almost completely paralysed.
  Research fieldsHawking's principal fields of research are theoretical cosmology and quantum gravity.
  In the late 1960s, he and his Cambridge friend and colleague, Roger Penrose, applied a new, complex mathematical model they had created from Albert Einstein's general theory of relativity. This led, in 1970, to Hawking proving the first of many singularity theorems; such theorems provide a set of sufficient conditions for the existence of a singularity in space-time. This work showed that, far from being mathematical curiosities which appear only in special cases, singularities are a fairly generic feature of general relativity.
  He supplied a mathematical proof, along with Brandon Carter, Werner Israel and D. Robinson, of John Wheeler’s "No-Hair Theorem" — namely, that any black hole is fully described by the three properties of mass, angular momentum, and electric charge.
  Hawking also suggested that, upon analysis of gamma ray emissions, after the Big Bang, primordial or mini black holes were formed. With Bardeen and Carter, he proposed the four laws of black hole mechanics, drawing an analogy with thermodynamics. In 1974, he calculated that black holes should thermally create and emit subatomic particles, known today as Hawking radiation, until they exhaust their energy and evaporate.
  In collaboration with Jim Hartle, Hawking developed a model in which the Universe had no boundary in space-time, replacing the initial singularity of the classical Big Bang models with a region akin to the North pole: one cannot travel North of the North pole, there is no boundary there. While originally the no-boundary proposal predicted a closed Universe, discussions with Neil Turok led to the realisation that the no-boundary proposal is consistent with a Universe which is not closed also.
  Among Hawking's many other scientific investigations, included are the study of: quantum cosmology, cosmic inflation, helium production in anisotropic Big Bang universes, large N cosmology, the density matrix of the universe, topology and structure of the universe, baby universes, Yang-Mills instantons and the S matrix; anti de Sitter space, quantum entanglement and entropy; the nature of space and time, including the arrow of time; spacetime foam, string theory, supergravity, Euclidean quantum gravity, the gravitational Hamiltonian; Brans-Dicke and Hoyle-Narlikar theories of gravitation; gravitational radiation, and wormholes.

Popular Books

A Brief History of Time, (Bantam Press 1988)

Black Holes and Baby Universes and Other Essays, (Bantam Books 1993)

The Universe in a Nutshell, (Bantam Press 2001)

On The Shoulders of Giants. The Great Works of Physics and Astronomy, (Running Press 2002) A Briefer History of Time, (Bantam Books 2005)

Awards

• 1975 Eddington Medal
• 1976 Hughes Medal of the Royal Society
• 1979 Albert Einstein Medal
• 1982 Order of the British Empire (Commander)
• 1985 Gold Medal of the Royal Astronomical Society
• 1986 Member of the Pontifical Academy of Sciences
• 1988 Wolf Prize in Physics
• 1989 Prince of Asturias Awards in Concord
• 1989 Companion of Honour
• 1999 Julius Edgar Lilienfeld Prize of the American Physical Society
• 2003 Michelson Morley Award of Case Western Reserve University
• 2006 Copley Medal of the Royal Society
  
  

Laika

Laika

Laika (from Russian: Лайка, a breed of dog, literally: "Barker") was a Russian space dog which became the first recorded living creature from Earth to enter orbit. At one time a stray wandering the streets of Moscow, she was selected from an animal shelter. Originally named Kudryavka (Russian: кудрявка), she was renamed Laika after her breed type. After undergoing training with two other dogs, she was selected to be the occupant of the Soviet spacecraft Sputnik 2 and was launched into space on 3 November 1957.
Laika died a few hours after launch from stress and overheating, probably due to a malfunction in the thermal control system. The true cause of her death was not made public until decades after the flight. Some former Soviet scientists have since expressed regret that Laika was allowed to die.[1]
Although Laika did not survive the trip, the experiment proved that a living passenger could survive being launched into orbit and endure weightlessness. It paved the way for human spaceflight and provided scientists with some of the first data on how living organisms react to spaceflight environments.

Rakesh Sharma

Rakesh Sharma,1st indian in space

Wing Commander Rakesh Sharma (retd) (born January 13, 1949 in Patiala, Punjab, India) was the first Indian and 138th man to visit space.
Born in Patiala Punjab joined the Indian Air Force and progress rapidly through the ranks. Rakesh Sharma, then squadron leader and pilot with the Indian Air Force embarked on the historic mission in 1984 as part of a joint space program between the Indian Space Research Organisation and the Soviet Intercosmos space program and spent eight days in space aboard the Salyut 7 space station. Launched along with two other Soviet cosmonauts aboard Soyuz T-11 on the 2 April 1984, was 35-year-old Rakesh Sharma. During the flight, Squadron Leader Sharma conducted multi-spectral photography of northern India in anticipation of the construction of hydroelectric power stations in the Himalayas. In a famous conversation, he was asked by the then Prime Minister Indira Gandhi how India looked from the space and he replied, Saare Jahan Se Achcha, (better than the whole world).
He was conferred with the honour of Hero of Soviet Union upon his return from space. The Government of India conferred its highest gallantry award(during peace time), the Ashoka Chakra on him and the other two Russian members of his mission.
Squadron Leader Sharma and his backup, Wing Commander Ravish Malhotra, also prepared an elaborate series of zero-gravity Yoga exercises which the former had practised aboard the Salyut 7. Retired with the rank of Wing Commander, Rakesh Sharma joined Hindustan Aeronautics Limited (HAL) as a test pilot. He was based at the Aircraft & Systems Testing Establishment (ASTE) in Bangalore and worked on the indigenous Light Combat Aircraft program.
Rakesh Sharma has now retired from active employment.
In November 2006 he took part in India's top scientists gathering [1] organized by ISRO which gave the green signal to an Indian manned space mission.

KALPANA CHAWLA

KALPANA CHAWLA

NASA ASTRONAUT

PERSONAL DATA: Born in Karnal, India. Died on February 1, 2003 over the southern United States when Space Shuttle Columbia and the crew perished during entry, 16 minutes prior to scheduled landing. She is survived by her husband. Kalpana Chawla enjoyed flying, hiking, back-packing, and reading. She held a Certificated Flight Instructor's license with airplane and glider ratings, Commercial Pilot's licenses for single- and multi-engine land and seaplanes, and Gliders, and instrument rating for airplanes. She enjoyed flying aerobatics and tail-wheel airplanes.

EDUCATION: Graduated from Tagore School, Karnal, India, in 1976. Bachelor of science degree in aeronautical engineering from Punjab Engineering College, India, 1982. Master of science degree in aerospace engineering from University of Texas, 1984. Doctorate of philosophy in aerospace engineering from University of Colorado, 1988.

AWARDS: Posthumously awarded the Congressional Space Medal of Honor, the NASA Space Flight Medal, and the NASA Distinguished Service Medal.

EXPERIENCE: In 1988, Kalpana Chawla started work at NASA Ames Research Center in the area of powered-lift computational fluid dynamics. Her research concentrated on simulation of complex air flows encountered around aircraft such as the Harrier in "ground-effect." Following completion of this project she supported research in mapping of flow solvers to parallel computers, and testing of these solvers by carrying out powered lift computations. In 1993 Kalpana Chawla joined Overset Methods Inc., Los Altos, California, as Vice President and Research Scientist to form a team with other researchers specializing in simulation of moving multiple body problems. She was responsible for development and implementation of efficient techniques to perform aerodynamic optimization. Results of various projects that Kalpana Chawla participated in are documented in technical conference papers and journals.

NASA EXPERIENCE: Selected by NASA in December 1994, Kalpana Chawla reported to the Johnson Space Center in March 1995 as an astronaut candidate in the 15th Group of Astronauts. After completing a year of training and evaluation, she was assigned as crew representative to work technical issues for the Astronaut Office EVA/Robotics and Computer Branches. Her assignments included work on development of Robotic Situational Awareness Displays and testing space shuttle control software in the Shuttle Avionics Integration Laboratory. In November, 1996, Kalpana Chawla was assigned as mission specialist and prime robotic arm operator on STS-87. In January 1998, she was assigned as crew representative for shuttle and station flight crew equipment, and subsequently served as lead for Astronaut Office’s Crew Systems and Habitability section. She flew on STS-87 (1997) and STS-107 (2003), logging 30 days, 14 hours and 54 minutes in space.

SPACE FLIGHT EXPERIENCE: STS-87 Columbia (November 19 to December 5, 1997). STS-87 was the fourth U.S Microgravity Payload flight and focused on experiments designed to study how the weightless environment of space affects various physical processes, and on observations of the Sun's outer atmospheric layers. Two members of the crew performed an EVA (spacewalk) which featured the manual capture of a Spartan satellite, in addition to testing EVA tools and procedures for future Space Station assembly. STS-87 made 252 orbits of the Earth, traveling 6.5 million miles in in 376 hours and 34 minutes.
STS-107 Columbia (January 16 to February 1, 2003). The 16-day flight was a dedicated science and research mission. Working 24 hours a day, in two alternating shifts, the crew successfully conducted approximately 80 experiments. The STS-107 mission ended abruptly on February 1, 2003 when Space Shuttle Columbia and the crew perished during entry, 16 minutes prior to scheduled landing.
MAY 2004

Sunita L. Williams

Sunita L. Williams

NASA Astronaut

PERSONAL DATA: Born September 19, 1965 in Euclid, Ohio, but considers Needham, Massachusetts to be her hometown. Married to Michael J. Williams. Although they have no children, Labrador retrievers and a crazy Jack Russell Terrier named Gorby have added their share of excitement to their lives. Recreational interests include running, swimming, biking, triathlons, windsurfing, snowboarding and bow hunting. Her parents, Dr. Deepak and Mrs. Bonnie Pandya, reside in Falmouth, Massachusetts.

EDUCATION: Needham High School, Needham, Massachusetts, 1983.B.S., Physical Science, U.S. Naval Academy, 1987.M.S., Engineering Management, Florida Institute of Technology, 1995.

ORGANIZATIONS: Society of Experimental Test Pilots, Society of Flight Test Engineers, American Helicopter Association.

SPECIAL HONORS: Awarded Navy Commendation Medal (2), Navy and Marine Corps Achievement Medal, Humanitarian Service Medal and various other service awards.

EXPERIENCE: Williams received her commission as an Ensign in the United States Navy from the United States Naval Academy in May 1987. After a six-month temporary assignment at the Naval Coastal System Command, she received her designation as a Basic Diving Officer and then reported to Naval Aviation Training Command. She was designated a Naval Aviator in July 1989. She then reported to Helicopter Combat Support Squadron 3 for initial H46, Seaknight, training. Upon completion of this training, she was assigned to Helicopter Combat Support Squadron 8 in Norfolk, Virginia, and made overseas deployments to the Mediterranean, Red Sea and the Persian Gulf in support of Desert Shield and Operation Provide Comfort. In September 1992 she was the Officer-in-Charge of an H-46 detachment sent to Miami, Florida for Hurricane Andrew Relief Operations onboard USS Sylvania. Williams was selected for United States Naval Test Pilot School and began the course in January 1993. After graduation in December 1993, she was assigned to the Rotary Wing Aircraft Test Directorate as an H-46 Project Officer, and V-22 Chase Pilot in the T-2. While there she was also assigned as the squadron Safety Officer and flew test flights in the SH-60B/F, UH-1, AH-1W, SH-2, VH-3, H-46, CH-53 and the H-57. In December 1995, she went back to the Naval Test Pilot School as an Instructor in the Rotary Wing Department and the school’s Safety Officer. There she flew the UH-60, OH-6 and the OH-58. From there she was assigned to the USS Saipan (LHA-2), Norfolk, Virginia, as the Aircraft Handler and the Assistant Air Boss. Williams was deployed onboard USS Saipan when she was selected for the astronaut program.
She has logged over 2770 flight hours in more than 30 different aircraft.

NASA EXPERIENCE: Selected by NASA in June 1998, she reported for training in August 1998. Astronaut Candidate Training included orientation briefings and tours, numerous scientific and technical briefings, intensive instruction in Shuttle and International Space Station systems, physiological training and ground school to prepare for T-38 flight training, as well as learning water and wilderness survival techniques. Following a period of training and evaluation, Williams worked in Moscow with the Russian Space Agency on the Russian contribution to the International Space Station (ISS) and with the first Expedition Crew to the ISS. Following the return of Expedition-1, Williams worked within the Robotics branch on the ISS Robotic Arm and the follow on Special Purpose Dexterous Manipulator. As a NEEMO2 crewmember she lived underwater in the Aquarius habitat for 9 days. Suni Williams served as a flight engineer aboard the International Space Station. She launched with the crew of STS-116 on December 9, 2006, docking with the station on December 11, 2006. As a member of the Expedition-14 crew Suni Williams established a world record for females with four spacewalks totaling 29 hours and 17 minutes of EVA. She concluded her tour of duty as a member of the Expedition-15 crew returning to Earth with the STS-117 crew to a safe landing at Edwards Air Force Base on June 22, 2007. She has logged a total of 195 days in space.
JUNE 2007