Solar probe Ulysses ends historic mission of discovery

Ulysses, a joint mission of NASA and the European Space Agency, officially ceased operations on Tuesday after operating for more than 18 years and charting the region of space above the poles of the sun, Xinhua reported.
  

A statement from NASA's Jet Propulsion Laboratory in Pasadena, California, said Ulysses followed programmed commands and switched off its transmitter completely at 4:15 p.m. EDT (2015 GMT).
  

When Ulysses was launched from the space shuttle Discovery on Oct. 6, 1990, it had an expected lifetime of five years. However, the mission gathered unique information about the heliosphere, the bubble in space carved by the solar wind, for nearly three times longer than expected.
  

"This has been a remarkable scientific endeavor," said Richard Marsden, Ulysses mission manager and project scientist at the European Space Agency. "The results Ulysses obtained have exceeded our wildest dreams many times over."
  

Ulysses made nearly three complete orbits of the sun. The probe revealed for the first time the three-dimensional character of galactic cosmic radiation, energetic particles produced in solar storms and the solar wind.
  

Not only has Ulysses allowed scientists to map constituents of the heliosphere in space, its longevity enabled them to observe the sun over a longer period of time than ever before.
  

"The sun's activity varies with an 11-year cycle, and now we have measurements covering almost two complete cycles," said Marsden. "This long observation has led to one of the mission's key discoveries, namely that the solar wind has grown progressively weaker during the mission and is currently at its weakest since the start of the Space Age."
  

In addition to measuring the solar wind and charged particles, Ulysses instruments measured small dust particles and neutral gases from local interstellar space that penetrate into the heliosphere. The spacecraft had an unprecedented three chance encounters with comet tails, registered more than 1,800 cosmic gamma-ray bursts, and provided findings for more than 1,000 scientific articles and two books.
  

"The breadth of science addressed by Ulysses is truly astonishing," said Ed Smith, Ulysses project scientist at NASA's Jet Propulsion Laboratory. "The data acquired during the long lifetime of this mission have provided an unprecedented view of the solar activity cycle and its consequences and will continue to keep scientists busy for many years to come."
  

The extended mission also presented significant challenges to the NASA-European operations team. In particular, critical parts of the spacecraft became progressively colder with time. In recent years, a major effort was made to prevent the onboard hydrazine fuel from freezing. The operations team continually created methods to allow the aging space probe to continue its scientific mission.

Azerbaijani citizens can visit dozens of countries without visa - Henley&Partners
Azerbaijani citizens can visit dozens of countries without visa - Henley&Partners
Azerbaijan expects tourism sector to recover by summer
Azerbaijan expects tourism sector to recover by summer
Georgia sees decrease in number of Azerbaijani visitors
Georgia sees decrease in number of Azerbaijani visitors
Loading Bars
Latest
Georgia not to revise 2021 budget
Volume of cargo exported by Azerbaijan via sea in 2021 disclosed
Raisina dialogue: Indo-Pacific epicentre of strategic competition, says Australia PM
Azerbaijan records sharp increase in cargo movement by air
Remittance inflows from Azerbaijan to Georgia show growth
Decrease in apartment prices in Georgia not expected - analyst
US investors aim to finance Georgian startups
Azerbaijan expanding network of seismic stations (PHOTO)
Turkmenistan prioritizes promotion of domestic goods to world markets
Kazakhstan boosts trade with Tajikistan despite COVID-19
Azerbaijan shows footage from Memer village of Gubadli district (PHOTO/VIDEO)
Nominal income of Azerbaijani population drops for Q12021
Foreigners show interest in making investments in Georgia
Azerbaijan's Azertutun company to be privatized - decree
Kazakhstan to amend rules for use of unmanned aircraft systems
Dozens of vehicles to be put up for state property auction in Azerbaijan
FAO working on approving Country Program Framing with Turkmenistan
U.S. housing starts increase more than expected in March
Photo capturing reaction to relative's death in Armenian attack on Azerbaijani Ganja named ‘Media Photo of Year’ in Turkey
Nokia expanding its activities in Georgia
SIEMENS AG modernizing thermal power plants in Uzbekistan’s Tashkent
Georgia shares data on dried fruit exports
Uzbekneftegaz JSC implementing modernization of unit at Uzbekistan's Shurtan Headings
Azerbaijan sees increase in inflation rate for Q12021
Turkmenistan leads in aviation oil exports to Georgia
Volume of Azerbaijan's 1Q2021 railway cargo traffic revealed
Russia's Yandex to launch e-grocery delivery in Paris then London
Kansas City revenue falls 3.5% as COVID-19 hits volumes
India To Spend $200 Million In Next 5-7 Years To Promote Hydrogen Use
Georgian Railway plans to issue Eurobonds in June 2021
Turkmenistan sees increase in number of registered business entities
Russian Hevel Energy Group commissions solar plant in Kazakhstan
UK PM Boris Johnson To Finalise "Roadmap 2030" With India: High Commission
India, France sign agreement for cooperation on Gaganyaan mission
Amazon announces $250 million fund for small, medium businesses in India
Sputnik V covid vaccine deliveries to India to begin this month
Anglo Asian Mining lowers gold output in Azerbaijan
International airport being built in Uzbekistan's Samarkand
Iran top OPEC oil producer for March 2021
Total assets of Azerbaijan's Kapital Bank increase
Japan provides loan to Uzbekistan within socio-economic dev't
Iran expects increase in production
Azerbaijan restoring roads in Tartar damaged during Second Karabakh War (PHOTO)
Memorandum of Understanding on co-op between Azerbaijan and OIC in field of statistics approved
COVID-19 affects trade turnover between Switzerland, Azerbaijan - ambassador
President of Afghanistan holds meeting with Nizami Ganjavi International Center (PHOTO)
Volume of natural gas industrial treatment at Turkmenistan’s Galkynysh field revealed
Iran has to take advantage of regional markets - Chamber of Commerce
Russia discloses volume of Sputnik V vaccine to be supplied to Azerbaijan
Azerbaijan shares data on cancelled tender, quotation poll results
Iran, Qatar may connect their power networks
Azerbaijan reveals 2M2021 data on cargo movement via TRACECA
Georgia sees increase in production of nuts and grapes
Meetings held in Azerbaijan with representatives of state bodies to switch to G-Cloud
Azerbaijan Airlines’ Supervisory Board holds first meeting (PHOTO)
China to invest in development of Iranian ports
Production of wheat and potato in Georgia increases
Switzerland sees potential in strengthening co-op with Azerbaijan in energy field
Uzbekistan interested in import of livestock from Kyrgyz Republic
Turkmenistan receives new industrial oil inflow
Uzbekistan discloses processing capacity of sunflower seeds by 2022
Azerbaijan talks reconstruction of several fish farms
VTB Group concludes deal for acquisition of Kazakhstan's KAZ Minerals
SOCAR boosts exports of oil, petrochemical and gas-chemical products
State Tax Service of Azerbaijan talks tax fees for online services
Passenger transportation indicators plummet in Kazakhstan
Azerbaijan's 1Q2021 GDP slightly decreases
Azerbaijani president, first lady view renovation, restoration work in Baku's Pirshaghi settlement (PHOTO)
Azerbaijan’s gas exports see 45% growth
Azerbaijan boosts gas exports via Baku-Tbilisi-Erzurum in 1Q2021
Azerbaijan records surplus in 1Q2021 state budget
Azerbaijan decreases oil exports via BTC
SOCAR increases gas output y-o-y
Uzbekistan to invest in viticulture dev't
Kazakhstan’s national postal service operator to buy consumables via tender
Uzbekistan continues ramping up flour, cereal exports
Mine explosion in Azerbaijan takes life of one more serviceman
Uzbekistan, Russia implementing numerous joint projects
Georgia reports 1,077 new cases of coronavirus for April 16
New Delhi a natural partner in shaping Indo-Pacific region: Australian PM Scott Morrison
Economist Intelligence Unit calculates 13 per cent growth for India, more than IMF prediction
Kazakhstan boosts exports to Russia over 2M2021
French Bouygues carries out construction of two new facilities in Turkmenistan
Azerbaijan's ADIF shares data on compensations paid to depositors of closed banks'
No point in discussing Nagorno-Karabakh problem in previous context - Russian expert
2021 to see over 3% increase in global gas demand
Georgia sees increase in hotel price index for March 2021
Kazakhstan unveils timeframe for large-scale crops sowing
Kazakhstan shares vehicle production data
Prices for precious metals up in Azerbaijan
Turkmenistan signs number of documents with international organizations
EBRD to invest in another project in Azerbaijan
National Bank of Georgia sells funds to stabilize lari exchange rate
Azerbaijan sees growth in retail turnover of ICT products from early 2021
IMF eyeing support to Kazakhstan's cybersecurity and risk management sectors
Iran - P5+1 on right track in Vienna talks - Deputy FM
Italian Senate delegation visits Azerbaijan's liberated Aghdam (PHOTO)
Islamic Solidarity Games-2021 may be postponed - Federation's Executive Committee
Azerbaijan’s pipeline gas deliveries set to increase by over 15%
1Q2021 volume of sold food products in Azerbaijan's trade network up
All news