JPL | Cubesat | MarCO

https://www.jpl.nasa.gov/cubesat/missions/marco.php

Labels: Oleg Zabluda

- posted by Oleg Zabluda @ 7:09 PM | permalink | | | technorati | bloglines | feedster

 
"""
"""
S2 star [...] comes closer to the black hole than any other star yet detected: about 120 a.u., or four times Neptune’s distance from the Sun. [...] S2’s flyby enables two tests of general relativity. The first is the gravitational redshift [...] about 200 km/s.
"""
https://www.skyandtelescope.com/astronomy-news/star-swings-around-black-hole-tests-gravity/

Labels: Oleg Zabluda

- posted by Oleg Zabluda @ 6:25 PM | permalink | | | technorati | bloglines | feedster

 
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"""
Russia

Mattis also prevailed in dissuading Congress from requiring enforcement of a 2017 sanctions law for countries that purchase Russian-made weapon systems or parts.

"Some nations who now actively seek a security relationship with the United States still rely on Russia for spare parts and other material," Mattis wrote, citing India and Vietnam as examples.

Otherwise, the new NDAA carries a spate of Cold War-like policy measures likely to irritate Russia. They include:

— $6.3 billion for the European Deterrence Initiative, the largest U.S. infusion yet for this effort — started during the Obama administration — that's aimed at bolstering defenses in European nations near Russia.

— A requirement that Secretary Mattis send Congress by March 2019 a feasibility report on permanently stationing in Poland U.S. Army brigade combat teams that are currently cycling through nine-month rotations there. Russia maintains that the 1997 NATO-Russia Founding Actprohibits the establishment of permanent NATO bases in former Warsaw Pact nations, including Poland. NATO and the U.S. disagree, but have nonetheless held off establishing new bases in those countries during the 21 years since the act was signed.

— A directive that Treasury Secretary Steven Mnuchin brief Congress on all assets known to be held by Russian President Vladimir Putin, his "oligarch" associates and other high officials in Russia.

— A strengthening of a ban on funding anything that recognizes the sovereignty of Russia over Crimea.

— A labeling of Russia as a violator of the Chemical Weapons Convention, based on Russia's alleged role in chemical attacks in Syria and Kremlin-linked assassination attempts in the United Kingdom.

— A requirement for certification that Trump has imposed sanctions on Russia for violations of the Intermediate-Range Nuclear Forces Treaty, as he had been directed to do in the 2018 NDAA; the bill also calls for the administration to submit plans to Congress for additional sanctions. A House provision was dropped that had called for considering INF treaty obligations nonbinding if Russia is not in compliance with the treaty.

— A ban on extending the New START nuclear arms limitation treaty (which expires in Feb. 2021) unless Congress receives a report from the administration on Russia's new strategic weapons determining whether Russia is in compliance with the treaty.

— Authorizes $65 million "for developing and producing a low-yield warhead to be mounted on a submarine-launched ballistic missile," according to a summaryof the bill. Proponents say this would deter Russia from using tactical, lower-yield weapons; opponents say such weapons increase the likelihood of nuclear war.
"""
https://www.npr.org/2018/08/05/635380840/defense-budget-shifts-militarys-focus-from-terrorism-to-china-and-russia

Labels: Oleg Zabluda

- posted by Oleg Zabluda @ 6:23 PM | permalink | | | technorati | bloglines | feedster

 
Is it true that heavy water is not blue?
Is it true that heavy water is not blue?
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presence of deuterium shifts the absorbance spectrum of heavy water further into the IR region, rendering it colorless.
"""
https://chemistry.stackexchange.com/questions/71894/is-it-true-that-heavy-water-is-not-blue
https://chemistry.stackexchange.com/questions/71894/is-it-true-that-heavy-water-is-not-blue

Labels: Oleg Zabluda

- posted by Oleg Zabluda @ 5:01 PM | permalink | | | technorati | bloglines | feedster