Topic: Phobos-Grunt spacecraft
Roscosmos filed an official request to the U.S. side to participate in the investigation, but they refused© RIA Novosti
MOSCOW, January 26 (RIA Novosti)
- Phobos-Grunt to crash into Pacific Ocean Jan. 15 - Roscosmos
- Russian Phobos-Grunt Mars probe falls in Pacific Ocean
- Russia was well aware of Phobos-Grunt mission risks - space chief
- Russian Scientists Mock U.S. Radar Theory on Mars Probe
- Russia to Test if U.S. Radar Downed Phobos Probe
- U.S. Radar May Have Damaged Russian Mars Probe - Paper
NASA has refused to participate in an experiment designed to show if U.S. radars could have had an impact on Russia’s troubled Phobos-Grunt Mars probe, the deputy head of the country’s space agency, Roscosmos, Anatoly Shylov said on Thursday.
“Roscosmos filed an official request to the U.S. side to participate in the investigation, but they refused,” Shylov said.
The official also said that the government commission inquiry into the cause of the probe’s crash had issued a final report with the results of the investigation. It is expected to be published next week.
Among the possible causes of the Phobos-Grunt probe’s crash, investigators said interference from the U.S. radar installed on the Marshall Islands in the Pacific Ocean could have had an impact. Scientists however dismissed the idea, saying that the U.S. radar theory is cover up to hide some people’s mistakes.
Phobos-Grunt, Russia's most ambitious planetary mission in decades was launched on November 9 but it was lost due to propulsion failure and fell back to Earth mid-January. Soon after the failed launch, the Russian space agency Roscosmos said a rocket motor should have started to push the probe into higher orbit but it failed to fire for unknown reasons.
According to NASA, Russia failed in all 17 of its attempts to study the Red Planet close-up since 1960. The most recent failure before November 2011 was in 1996, when Russia lost its Mars-96 orbiter during launch.
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- jim obergSerious people think idea is nonsense23:44, 26/01/2012I'm glad to see this silly idea being dropped by all serious people. It's sad it was ever mentioned by Russian 'experts'. The notion is so easy to refute.
My argument is threefold:
1. NO MOTIVE: Aside from NASA scientists' own denials, there's no evidence that ANY Kwaj radar were EVER used for ANY asteroid observations -- as the scientific literature, which thoroughly describes all previous experiments AND the exact sites of the radars used -- demonstrates. Other radars are mentioned -- Kwaj, never.
2. NO MEANS: High-power radar beams for deep-space probing are very concentrated and hence very narrow -- slimmer than the angular size of the Moon in the sky. The odds of anything fltying through such a beam, even if one existed at the time of the satellite's fly-overs, is slight. ESA found that even when they actually TRIED to get their narrow-focus beams on the Fobos-Grunt to aid in Russia's recovery effort, it was devilishly difficult and took multiple missed attempts before they managed it -- and then it still didn't work.
3. NO OPPORTUNITY: The clincher is that simple Internet-available astronomy software can be used to show that the asteroid in question was below the horizon during both passes of the probe over Kwaj that day. It was IMPOSSIBLE to send a beam to it at those times, so why should anyone have been trying?