Taxonomy term


Benchmarks: August 27, 1958: Operation Argus creates first anthropogenic space weather

Sixty years ago this month, a fleet of nine U.S. Navy ships with 4,500 people aboard maneuvered into the Atlantic. Eight of these ships continued to the South Atlantic, about 1,800 kilometers southwest of Cape Town, South Africa, while the ninth headed to the North Atlantic, near the Azores. The clandestine military operation — code-named Operation Argus — was not an invasion, but a scientific mission, carried out at a staggering pace and inspired by an unpublished research paper by an elevator engineer with an interest in accelerator physics.

27 Aug 2018

Beyond the bomb: The world's nuclear watchdog expands its science

The Comprehensive Nuclear-Test-Ban Treaty Organization uses a vast array of scientific instruments deployed around the world to detect evidence of rogue nuclear weapons tests. Now, they're using the collected data for other types of science as well.

27 Apr 2015

On-site inspections

In the event that the CTBT enters into force, a third element of the CTBTO's verification regime — in addition to the IMS and IDC — would come into play: on-site inspections (OSI). Given potential evidence of a nuclear test, member states can call for an inspection of the suspected area as a final verification measure.

27 Apr 2015

Satellites can detect underground nuclear explosions

SAN FRANCISCO: If you’re looking for hints of an underground nuclear explosion, the last place you might think to look is up. But it turns out that the sky is a great place to look for clues, because satellites provide scientists with a way to locate the waves that clandestine weapons tests emit into the upper atmosphere, scientists announced yesterday.

05 Dec 2012

Gauging nuclear disasters

A nuclear accident is defined by the International Atomic Energy Agency (IAEA) as an incident in which people died or property damage topped $50,000. In 1990, IAEA introduced the International Nuclear and Radiological Event Scale (INES) to rate and rank nuclear accidents. INES is a logarithmic scale that consists of seven levels: 0 (Deviation, no safety significance), 1 (Anomaly), 2 (Incident), 3 (Serious incident), 4 (Accident with local consequences), 5 (Accident with wider consequences), 6 (Serious accident) and 7 (Major accident).

31 May 2011

Nuclear Fallout

Willard Libby, who won a Nobel Prize for Chemistry in 1960, was a prominent advocate of nuclear weapons testing, and worked on the Manhattan Project to help develop an atomic bomb during World War II. During the late 1950s, chemist Linus Pauling, a peace activist who won Nobel Prizes for both Chemistry and Peace, presented the United Nations with a petition signed by more than 11,000 scientists that called for an end to nuclear weapons testing. In particular, Pauling cited a 1958 speech on carbon-14 by Libby that suggested nuclear tests would produce large amounts of the radioactive isotope. 
18 May 2010