Hubble Space Telescope sidelined by gyroscope problem

11 Octobre, 2018, 03:26 | Auteur: Therese Cote
  • Hubble Space Telescope sidelined by gyroscope problem

The Hubble Space Telescope stopped collecting science data on 5 October, because of a problem with one of the gyroscopes that the observatory uses to orient itself on celestial targets.

In a series of tweets and a press release, the space agency revealed that one of the three gyroscopes (gyros) that is now in use failed.

"While reduced-gyro mode offers less sky coverage at any particular time, there is the relatively limited impact on the overall scientific capabilities", NASA said.

The Space Telescope Science Institute's deputy mission head, Dr. Rachel Osten, said the first move "is to try to bring back the last gyro, which had been off, and is being problematic".

Osten described the current situation as "not really scary".

'The gyro lasted about six months longer than we thought it would (almost pulled the plug on it back in the spring). "We'll work through the issues and be back", Osten added in another tweet.

That was unfortunate, as the telescope requires at least three functional gyroscopes for optimal use.

"I don't think anybody is worried-worried that the mission, say, is coming to an end, because it's not".

Dow ends brutal session with 3.1% loss, Nasdaq down 4%
Today technology stocks saw their worst overall day since 2011 as investors concerns continue to mount over rising interest rates. Higher rates can slow economic growth, erode corporate profits and make investors less willing to pay high prices for stocks.

Tropical Storm Michael, Heading North, Could Become Category 2 Hurricane
Hurricane force winds extend 45 miles outside the center, and tropical storm force winds extend outwards 175 miles. Outer bands from the storm are also expected to bring roughly 100 mm of rain to the Florida Keys through Tuesday.

Google conteste la condamnation de la Commission européenne — Android
D'après Reuters, en raison de la complexité de l'affaire, l'appel pourrait mettre des années avant d'être jugé. En juillet dernier, Google a écopé d'une amende record de 4,34 milliards d'euros en Europe au sujet d'Android.

More than 30 astronauts have flown to Hubble to deploy, upgrade and fix the observatory with the support of a human spaceflight and space shuttle staff. Thousands of astronomers from dozens of countries have used Hubble and analyzed its data to produce more than 15,000 peer reviewed papers to date.

Hubble has six gyroscopes, all of which were replaced by spacewalking astronauts during a servicing mission in May 2009.

Hubble is now down to two working gyros and needs at least three for optimal operations. That would permit one of the two gyros to be turned off, preserving its life until it's needed when the other fails.

While optimistic the problem can be resolved, he said Hubble can operate in near-normal fashion with just one gyroscope if worse comes to worse, although it would be more hard to track fast-moving targets.

The telescope is known to be nearing the end of its active life, with the James Webb Space Telescope - now scheduled for launch no earlier than 2021 - slated to be its successor.

Even with one gyro working, Hubble will still be able to take part in science, NASA confirmed. "If the outcome of this investigation results in recovery of the malfunctioning gyro, Hubble will resume science operations in its standard three-gyro configuration", the agency stated.

If it eventually comes to that, the plan would be to skip the two-gyro mode and go directly to single-gyro control to preserve the life of the remaining unit.

Conseillé:



Populaire

American Music Awards - All The Performances: Watch Here!
Please, please educate yourself on the candidates running in your state and vote based on who most closely represents your values. In 2014, the "Shake It Off" and "Look What You Made Me Do" singer received the distinguished Dick Clark Award for Excellence.

Trump Says Fed Has Gone 'Crazy' With Interest Rate Hikes
In September, the Federal Reserve raised short-term interest rates for the third time this year. But he's also calling the drop "a correction we've been waiting for for a long time".

Camila Cabello Delivers Emotional "Consequences" Performance At 2018 AMAs
During the red carpet, Camila posted an Instagram revealing who DID get the honor of taking her to the 2018 American Music Awards. After singer her long-awaited track, the singer-songwriter warranted a standing ovation from the moved audience.

Le journaliste Jean Lanzy est décédé à Aigues-Mortes — Gard
Le couple était "tombé en amour pour Aigues-Mortes", disait-il, au point de s'y fixer définitivement intra-muros pour sa retraite. Il est par la suite nommé directeur délégué de l'information et, en 1985, directeur délégué aux programmes et à l'information.

Didier Deschamps encense Kylian Mbappé
Le sélectionneur de l'équipe de France, Didier Deschamps, mesure la chance qu'il a de pouvoir s'appuyer sur Kylian Mbappé. Et on se réchauffe à ça comme devant un poêle chaud: les belles choses à venir, celles que l'on imagine.

Pope Francis compares abortion to 'hiring a killer'
It also forbids euthanasia but says that a family or a patient can decide to stop using extraordinary means to keep people alive. Francis this year opposed a bill that would have legalised abortion in his home country of Argentina.

"Complètement dingue", "bête", "mauvais", … : des cadres FO fichés dans un document interne
Selon Le Parisien , les commentaires pouvaient également portés sur l'opinion politique, voire l'orientation sexuelle. Interrogé par l'hebdomadaire, le secrétaire général actuel, Pascal Pavageau , évoque une " belle connerie ".

Christensen suggests he could look to leave Chelsea
His efforts earned him Chelsea's Young Player of the Year Award as he looked set to have a bright future at Stamford Bridge. Not preferred by new boss Maurizio Sarri, the Danish defender did however downplay fears of a January exit.

Katie Price arrested on suspicion of drink-driving
She's also faced headlines about her financial situation, the state of her mansion and allegations of wild partying. TV personality and former glamour model Katie Price has been arrested on suspicion of drink-driving.

Indonesia says death toll in Sulawesi quake rises past 2,000
The quake and subsequent tsunami have killed at least 2,000 people with thousands more possibly missing, according to Indonesia. There is an ongoing search for victims but the government said it will stop recovery operations on Thursday.