Mark Boslough | |
---|---|
Born | |
Nationality | American |
Alma mater | California Institute of Technology Colorado State University |
Scientific career | |
Fields | Physics Geophysics Planetary Defense |
Institutions | Los Alamos National Laboratory University of New Mexico Sandia National Laboratories |
Doctoral advisor | Thomas J. Ahrens |
Website | www |
Mark Boslough is an American physicist at Los Alamos National Laboratory, research professor at University of New Mexico, fellow of the Committee for Skeptical Inquiry, [1] and chair of the Asteroid Day Expert Panel. He is an expert in the study of planetary impacts and global catastrophes. Due to his work in this field, Asteroid 73520 Boslough (2003 MB1) was named in his honor. [2]
Boslough grew up in Broomfield, Colorado. He holds a B.S. in physics at Colorado State University, and an MS and PhD in applied physics at the California Institute of Technology.
An expert on planetary impacts and global catastrophes, Boslough's work on airbursts challenged the conventional view of asteroid collision risk and is now widely accepted by the scientific community. [3] He was the first scientist to suggest that the Libyan Desert Glass was formed by melting due to overhead heating from an airburst. [4] His hypothesis was popularized by the documentaries "Tutunkhamun's Fireball" (BBC), [5] [6] (recipient of Discover Magazine's Top 100 Science Stories of 2006) [7] and Ancient Asteroid National Geographic. [8] Footage from the documentaries has been used to describe the controversial notion that a large airburst over North America caused an abrupt climate change mass extinction. [9] However, Boslough has been a leading critic of the Younger Dryas impact hypothesis, arguing among other things that the proponents have misinterpreted his airburst models. [10] He appeared as a skeptic on the "Last Extinction" Nova , [11] (recipient of AAAS Kavli award for best science documentary of 2009). [12]
In 2011, he presented a paper at the IAA Planetary Defense Conference in Bucharest, Romania, in which he stated, "It is virtually certain (probability > 99%) that the next destructive NEO event will be an airburst." [13] This prediction proved true less than two years later, on Feb. 15, 2013, when an airburst over Chelyabinsk, Russia injured more than 1000 people. Boslough was among the first western scientists to arrive in Chelyabinsk, where he did field research and accompanied a production crew filming Meteor Strike for Nova. [14] Most of the documentaries are focused on his impact and airburst modeling. [15]
In February 2011, it was announced that Boslough had been elected a fellow of the Committee for Skeptical Inquiry. [1]
In 2014, Boslough delivered a major address on "death plunge" asteroids that can pose a sudden danger to Earth at the second Starmus Festival in the Canary Islands. Also in 2014 he talks about his interest in asteroids to Toni Feder of Physics Today: "In his childhood home in Colorado, says Boslough, "there was a left-brain right-brain thing going on, with fiction and nonfiction in the same household." [16]
In recognition of Boslough's work in the field of planetary impacts and global catastrophes, Asteroid 73520 Boslough (2003 MB1) was named in his honor. [2]
Boslough is a vocal critic of pseudoscience and anti-science and has written about climate change denial in the Skeptical Inquirer in reference to "Climategate" conspiracy theories. [17] He is also active in uncovering scientific misconduct. [18] [19] [20]
An advocate of using humor to defend science, [21] he once published an essay as an April Fool's Day joke in the April, 1998 issue of the New Mexicans for Science and Reason newsletter to poke fun at New Mexico's legislature for attempting to require schools to teach creationism. He wrote that the Alabama state legislature had voted to change the value of the mathematical constant pi from 3.14159 to the 'Biblical value' of 3.0. The article was posted on a newsgroup and passed around to people via email, causing an outrage. When people started calling the Alabama legislature to protest, the joke was revealed. [22] National Geographic News highlighted Boslough's story when it compiled a list of "some of the more memorable hoaxes in recent history." [23] It was elevated by the Museum of Hoaxes to number seven on its "Top 100 April Fools Hoaxes of All Time" list. [24] It eventually took on a new existence as an urban legend and has had to be debunked by Snopes. [25]
He also demonstrated that emailed lists of "Darwin Awards" include fake stories. After receiving an annual list of unfortunate deaths at the end of 1998, he fabricated his own over-the-top fictional Darwin Award recipient, appended it, and forwarded the list to his friends. That story also went viral, was printed as an actual event by the Denver Post, leading to another debunking by Snopes. [26]
In a tweet on March 13, 2018, Boslough announced he was a candidate for the New Mexico House of Representatives, challenging the incumbent William Rehm. [27] [28] Boslough lost the primary election to the incumbent william Rehm, 1,509 to 288 (84% to 16%). [29]
Boslough is an advocate of laws to reform the 19th-century law known as RS 2477 to prevent it from being used to take private property for public use. [30] His fight turned into a prolonged battle with off-road clubs pulling out boulders and seedlings that Boslough used to try and restore his property. [31] He also received verbal and physical threats before he successfully defended a lawsuit (Ramey v. Boslough) in which the ownership of a four-wheel-drive road across his Colorado property was challenged by a plaintiff who was backed by off-road recreation interests. [32] He used this experience to argue that the "right to radiate" is a prescriptive private property right, and that carbon polluters must compensate individuals for degrading their personal cooling capacity. [33]
The Tunguska event was a large explosion of between 3 and 50 megatons that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate, Russia, on the morning of 30 June 1908. The explosion over the sparsely populated East Siberian taiga flattened an estimated 80 million trees over an area of 2,150 km2 (830 sq mi) of forest, and eyewitness accounts suggest up to three people may have died. The explosion is generally attributed to a meteor air burst, the atmospheric explosion of a stony asteroid about 50–60 metres wide. The asteroid approached from the east-south-east, probably with a relatively high speed of about 27 km/s (60,000 mph). Though the incident is classified as an impact event, the object is thought to have exploded at an altitude of 5 to 10 kilometres rather than hitting the Earth's surface, leaving no impact crater.
An impact event is a collision between astronomical objects causing measurable effects. Impact events have been found to regularly occur in planetary systems, though the most frequent involve asteroids, comets or meteoroids and have minimal effect. When large objects impact terrestrial planets such as the Earth, there can be significant physical and biospheric consequences, as the impacting body is usually traveling at several kilometres a second, though atmospheres mitigate many surface impacts through atmospheric entry. Impact craters and structures are dominant landforms on many of the Solar System's solid objects and present the strongest empirical evidence for their frequency and scale.
Asteroid impact avoidance encompasses the methods by which near-Earth objects (NEO) on a potential collision course with Earth could be diverted away, preventing destructive impact events. An impact by a sufficiently large asteroid or other NEOs would cause, depending on its impact location, massive tsunamis or multiple firestorms, and an impact winter caused by the sunlight-blocking effect of large quantities of pulverized rock dust and other debris placed into the stratosphere. A collision 66 million years ago between the Earth and an object approximately 10 kilometers wide is thought to have produced the Chicxulub crater and triggered the Cretaceous–Paleogene extinction event that is understood by the scientific community to have caused the extinction of all non-avian dinosaurs.
The term Spaceguard loosely refers to a number of efforts to discover, catalogue, and study near-Earth objects (NEO), especially those that may impact Earth.
Eugene Merle Shoemaker was an American geologist. He co-discovered Comet Shoemaker–Levy 9 with his wife Carolyn S. Shoemaker and David H. Levy. This comet hit Jupiter in July 1994: the impact was televised around the world. Shoemaker also studied terrestrial craters, such as Barringer Meteor Crater in Arizona, and along with Edward Chao provided the first conclusive evidence of its origin as an impact crater. He was also the first director of the United States Geological Survey's Astrogeology Research Program.
The B612 Foundation is a private nonprofit foundation headquartered in Mill Valley, California, United States, dedicated to planetary science and planetary defense against asteroids and other near-Earth object (NEO) impacts. It is led mainly by scientists, former astronauts and engineers from the Institute for Advanced Study, Southwest Research Institute, Stanford University, NASA and the space industry.
A bolide is normally taken to mean an exceptionally bright meteor, but the term is subject to more than one definition, according to context. It may refer to any large crater-forming body, or to one that explodes in the atmosphere. It can be a synonym for a fireball, sometimes specific to those with an apparent magnitude of −4 or brighter.
William M. (Bill) Napier is the author of five high tech thriller novels and a number of nonfiction science books.
Petrus Matheus Marie (Peter) Jenniskens is a Dutch-American astronomer and a senior research scientist at the Carl Sagan Center of the SETI Institute and at NASA Ames Research Center. He is an expert on meteor showers, and wrote the book Meteor Showers and their Parent Comets, published in 2006 and Atlas of Earth’s Meteor Showers, published in 2023. He is past president of Commission 22 of the International Astronomical Union (2012–2015) and was chair of the Working Group on Meteor Shower Nomenclature (2006–2012) after it was first established. Asteroid 42981 Jenniskens is named in his honor.
Trinity Southwest University (TSU) is an unaccredited evangelical Christian institution of higher education with an office in Albuquerque, New Mexico. Principally a theological school that encompasses both the Bible college and theological seminary concepts of Christian education, it offers distance education programs and degrees in Biblical Studies, Theological Studies, Archaeology & Biblical History, Biblical Counseling, Biblical Representational Research, and University Studies.
The Younger Dryas impact hypothesis (YDIH) proposes that the onset of the Younger Dryas (YD) cool period (stadial) at the end of the Last Glacial Period, around 12,900 years ago was the result of some kind of extraterrestrial event with specific details varying between publications. The hypothesis is controversial and widely rejected by relevant experts.
A meteor air burst is a type of air burst in which a meteoroid explodes after entering a planetary body's atmosphere. This fate leads them to be called fireballs or bolides, with the brightest air bursts known as superbolides. Such meteoroids were originally asteroids and comets of a few to several tens of meters in diameter. This separates them from the much smaller and far more common "shooting stars", that usually burn up quickly upon atmospheric entry.
David Morrison is an American astronomer, a senior scientist at the Solar System Exploration Research Virtual Institute, at NASA Ames Research Center in Mountain View, California. Morrison is the former director of the Carl Sagan Center for Study of Life in the Universe at the SETI Institute and of the NASA Lunar Science Institute. He is the past Director of Space at NASA Ames. Morrison is credited as a founder of the multi-disciplinary field of astrobiology. Morrison is best known for his work in risk assessment of near Earth objects such as asteroids and comets. Asteroid 2410 Morrison was named in his honor. Morrison is also known for his "Ask an Astrobiologist" series on NASA's website where he provides answers to questions submitted by the public. He has published 12 books and over 150 papers primarily on planetary science, astrobiology and near Earth objects.
The Chelyabinsk meteor was a superbolide that entered Earth's atmosphere over the southern Ural region in Russia on 15 February 2013 at about 09:20 YEKT. It was caused by an approximately 18 m (60 ft) diameter, 9,100-tonne (10,000-short-ton) near-Earth asteroid that entered the atmosphere at a shallow 18‐degree angle with a speed relative to Earth of 19 kilometres per second. The light from the meteor was briefly brighter than the Sun, visible as far as 100 km (60 mi) away. It was observed in a wide area of the region and in neighbouring republics. Some eyewitnesses also reported feeling intense heat from the fireball.
James Lawrence Powell is an American geologist, writer, former college president and museum director. He chaired the geology department at Oberlin College later serving as its provost and president. Powell also served as president of Franklin & Marshall College as well as Reed College. Following his positions in higher education, Powell presided over the Franklin Institute and the Natural History Museum of Los Angeles.
New Mexicans for Science and Reason is a science advocacy organization based in Albuquerque, New Mexico. Founded by Skeptical Inquirer editor Kendrick Frazier on May 16, 1990. As of 1998 the President is physicist and mathematician Dave Thomas. Thomas was still the President in spring of 2018 In 1996 creationists on the New Mexico School Board tried to change science standards to water down instruction of evolution. NMSR was instrumental in having that decision reversed.
Asteroid laser ablation is a proposed method for deflecting asteroids, involving the use of a laser array to alter the orbit of an asteroid. Laser ablation works by heating up a substance enough to allow gaseous material to eject, either through sublimation or vaporization. For most asteroids this process occurs between temperatures in the range of 2,700–3,000 K. The ejecting material creates a thrust, which over an extended period of time can change the trajectory of the asteroid. As a proof of concept on a small scale, Travis Brashears, a researcher at UC Santa Barbara's Experimental Cosmology Lab, led by Dr. Philip Lubin, has already experimentally verified that laser ablation can de-spin and spin-up an asteroid.
Magicians of the Gods: The Forgotten Wisdom of Earth's Lost Civilisation is a 2015 book by British pseudoarchaeology writer Graham Hancock, published by Thomas Dunne Books in the United States and by Coronet in the United Kingdom. Macmillan Publishers released an "updated and expanded" paperback edition in 2017.
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