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".

Sears hires a bankruptcy expert
The retailer warned last month it may go out of business if the deals proposed by Lampert were not approved. Sears and Kmart had 89,000 employees as of February 3 of this year, according to a company filing.

"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.

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:

  • Evacuations ordered as ‘monstrous’ Hurricane Michael approaches Florida

    Evacuations ordered as ‘monstrous’ Hurricane Michael approaches Florida

    A major hurricane is defined as Category 3 or greater on the Saffir-Simpson scale, with sustained winds of 111mph or greater. "This storm has the potential to be a historic storm, please take heed", the sheriff's office said in the post.
    Pet Sematary's First Trailer Is As Creepy As You Hoped

    Pet Sematary's First Trailer Is As Creepy As You Hoped

    Jason Clarke and Amy Seimetz star, with John Lithgow , Alyssa Brooke Levine , Hugo Lavoie , Jeté Laurence , and Obssa Ahmed . Lorenzo di Bonaventura (1408, Transformers) is producing along with Mark Vahradian and Steven Schneider (Insidious).
    Malcolm McDowell To Play Rupert Murdoch In Fair And Balanced

    Malcolm McDowell To Play Rupert Murdoch In Fair And Balanced

    Showtime is also putting together a limited series starring Russell Crowe as Ailes and Naomi Watts as Gretchen Carlson . Other characters that will be included in the film are former anchor Greta Van Susteren and former host Bill O'Reilly.
  • American Music Awards - All The Performances: Watch Here!

    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.

    Le concert de Lil Wayne se termine dans la panique générale !

    Rien n'indique que des coups de feu ont véritablement été tirés, affirment les policiers. En mai 2015, l'autobus de tournée de Lil Wayne avait été la cible des balles à Atlanta.
    Pope Francis compares abortion to 'hiring a killer'

    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.
  • Tropical Storm Michael, Heading North, Could Become Category 2 Hurricane

    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.
    Lourd bilan humain — Inondations à Majorque

    Lourd bilan humain — Inondations à Majorque

    Les secouristes sont à l'oeuvre depuis la nuit pour rechercher les disparus. La chambre des députés a observé une minute de silence mercredi matin.
    New mental health campaign launched across the Midlands

    New mental health campaign launched across the Midlands

    The authors detail the grim reality of suicide and make a case for completely rethinking our overall approach to mental health as a society.
  • 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".
    Le journaliste Jean Lanzy est décédé à Aigues-Mortes — Gard

    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.
    TPMP: Cyril Hanouna veut régler ses comptes avec Alain Chabat !

    TPMP: Cyril Hanouna veut régler ses comptes avec Alain Chabat !

    Depuis le début du mois d'octobre, le jeu de l'émission " Burger Quiz " est en vente. Entre Cyril Hanouna et Alain Chabat il y'a comme de l'eau dans le gaz .


Populaire

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.

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.

International Monetary Fund raises Japan growth forecast, cuts global estimate due to trade tension
The IMF said it expects inflation to accelerate around the world this year, due largely to increasing commodity prices.

Que retenir du séisme qui frappe le football professionnel belge ?
L'enquête fédérale a débuté à la fin 2017, à la suite d'un rapport de l'Unité des fraudes sportives de la police fédérale. Les enquêteurs sont repartis du Standard vers 10h30 ce matin avec les documents demandés par la justice.

Le scénario noir des experts internationaux — Réchauffement du climat
Selon le Giec , "il est probable" que le réchauffement atteigne 1,5 °C entre 2030 et 2052 s'il se poursuit à son rythme actuel. A +2°C ce serait 10 cm de plus, soit jusqu'à 10 millions de personnes supplémentaires affectées.

Jimmy Butler Returns To Practice, Verbally Challenges Coaches, Teammates
When reporters were allowed in at the conclusion of practice, Butler wasn't on the court. "It's just a matter or when". According to ESPN , the Wolves were close to a Butler trade with the Heat this weekend, but it fell apart.

Liverpool's Fabinho enjoying learning Jurgen Klopp's style of play
And we hope that they come back healthy and play these easy competitions, the Premier League, the Champions League and all this.

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.

Majorca floods: Two Britons reported among five dead amid 'biblical' scenes
Other victims were found in Arta and the coastal town of S'illot, where the overflowed creek reaches the sea. The flooding also affected phone communications, destroyed two bridges and forced the closure of 11 roads.