News archive

News archive

PR 28-1998: SOHO spacecraft contacted
Contact has been re-established with the ESA/NASA Solar and Heliospheric Observatory (SOHO) following six weeks of silence. Signals sent yesterday through the NASA Deep Space Network (DSN) station at Canberra, Australia, were answered at 22:51 UT in the form of bursts of signal lasting from 2 to 10 seconds. These signals were recorded both by the NASA DSN station and the ESA Perth station. Contact is being maintained through the NASA DSN stations at Goldstone (California), Canberra and Madrid (Spain).
Published: 4 August 1998
Mars Express Invitation to Tender
The Invitation to Tender for Mars Express has been issued to European Industry.
Published: 27 July 1998
PR 27-1998: SOHO spacecraft located with ground-based radar
Ground-based radio telescopes have been able to detect the Solar and Heliospheric Observatory (SOHO) spacecraft and have found it slowly rotating near its original position in space, a potentially important step toward possible recovery of direct communications with the spacecraft.
Published: 27 July 1998
25 years on - ESA's space science still going strong
ESA was created at the European Space Conference in Brussels in July 1973. To mark the 25th anniversary of this event, ESA has issued a short history "ESA, Looking Forward...Looking Back".
Published: 25 July 1998
INFO 25-1998: Nearby star cluster yields insights into early universe
The NASA/ESA Hubble Space Telescope has taken a 'family portrait' of young, ultra-bright stars nested in their embryonic cloud of glowing gases. The celestial maternity ward, called N81, is located 200 000 light-years away in the Small Magellanic Cloud, a small irregular satellite galaxy of our Milky Way. These are probably the youngest massive stars ever seen in the nearby galaxy.
Published: 24 July 1998
INFO 24-1998: ISO sees the pattern in the cosmic wallpaper
The European Infrared Space Telescope (ISO) finds a new population of galaxies, the first objects known to contribute to the background glow of the universe. The discovery will help to solve the mystery of galaxy formation.
Published: 24 July 1998
First XMM Workshop call for papers
The XMM Science Operations Centre of ESA will be holding the First XMM Workshop at ESTEC, Noordwijk, 30 September - 2 October.The Second Announcement and Call for Papers is now available.
Published: 20 July 1998
Hipparcos catalogue available on-line
The most accurate and comprehensive stellar catalogues ever produced, the Hipparcos and Tycho Catalogues, were published in June 1997. Since June 1997 professional and amateur astronomers have been able to make use of this enormously rich resource on line.
Published: 20 July 1998
PR 26-1998: Efforts to recover SOHO continue
ESA and NASA engineers, reasoning that over thenext two-to-three months the spacecraft's solar panels will increasinglyface the Sun and generate power, are continuing their efforts to contactthe Solar and Heliospheric Observatory (SOHO) spacecraft.Meanwhile, the ESA/NASA investigation board concentrates its inquiry onthree errors that appear to have led to the interruption ofcommunications with SOHO on June 25. Officials remain hopeful that,based on ESA's successful recovery of the Olympus spacecraft after fourweeks under similar conditions in 1991, recovery of SOHO may bepossible.
Published: 16 July 1998
Europe discusses the future space telescope
The head of the European Space Agency's (ESA) Science Programme will tell more than 200 astronomers gathered in Belgium today (Thursday - June 18) thatEurope could play a significant role in the development of a new space telescope.
Published: 15 July 1998
FIRST and Planck key meeting 3 July
On 3 July the ESA Executive, the FIRST and Planck Principal Investigators (PIs), and the SPCdelegations met in ESA HQ. This was the first opportunity after the May SPC meeting to discuss sciencepayload and ground segment issues in the light of the decisions taken in that SPC meeting and therecommendations given by the FIRST and Planck science (instrument proposal) evaluation committees.
Published: 15 July 1998
Huygens AGC test extended report available
A more detailed report on the Huygens Automatic Gain Control (AGC) testis now available. The results of the test confirm that the Huygens Probehardware is in good health and that the depressed AGC values detectedduring the first two in-flight checkouts were the result of solar noise.
Published: 15 July 1998
Rosetta experiment reviews in progress
Rosetta Experiment Intermediate Design Reviews (EIDR) started at the beginning of July and will be finished in October. At the EIDRs the design of the individual experiments of the Rosetta payload are reviewed by ESA.
Published: 7 July 1998
PR 24-1998: Efforts to recover SOHO continue as inquiry board co-chairs named
Engineers are continuing efforts to reestablish contact with the ESA/NASA Solar and Heliospheric Observatory (SOHO) spacecraft using NASA's Deep SpaceNetwork (DSN). Contact with SOHO was lost on 25 June (CEST) during maintenance operations.
Published: 30 June 1998
PR 23-1998: SOHO spacecraft observations interrupted
At 01:16 CEST 25 June 1998 (23:16 UT 24 June), during routine maintenance operations, ground controllers lost contact with the SOHO (Solar and Heliosopheric Observatory) spacecraft and the satellite went into Emergency Sun Reacquisition (ESR) mode. The ESR mode is activatedwhen an anomaly occurs and the spacecraft loses its orientation towards the Sun. When this happens, the spacecraft automatically tries to pointitself towards the Sun again by firing its attitude control thrusters under the guidance of an onboard Sun sensor.
Published: 26 June 1998
FIRST/Planck study phase
Following the ESA's Science Programme (SPC) meeting of 28/29 May "the coupled FIRST/Planck missions will now enter a detailed study phase, encompassing the selected instruments, with the objective of refining a joint mission scenario within reach of a stringent target cost", states Brian Taylor, Head of the Astrophysics Division of the Space Science Department of ESA, in ESA's Astronews No. 35.
Published: 25 June 1998
FIRST/Planck study phase
Following the ESA's Science Programme (SPC) meeting of 28/29 May "the coupled FIRST/Planck missions will now enter a detailed study phase, encompassing the selected instruments, with the objective of refining a joint mission scenario within reach of a stringent target cost", states Brian Taylor, Head of the Astrophysics Division of the Space Science Department of ESA, in ESA's Astronews No. 35.
Published: 25 June 1998
Mars Express payload endorsed
ESA's Science Programme Committee confirmed the payload for Mars Express, at its meeting 28 May. Seven instruments have beenselected for the orbiter and the possibility left open to add a small lander.
Published: 23 June 1998
24 proposals for SMART-1
A total of 24 proposals for technology experiments were received in response to the SMART-1 Announcement of Opportunity on the deadline of 5 June.
Published: 22 June 1998
INFO 22-1998: Hurry along please, for the Mars Express
Any scientists wanting to send instruments to the surface of the planet Mars have until 3 July to offer a small lander that might be carried aboard the European Space Agency mission Mars Express. The selection of a lander, if any, will then be the last stage in defining the scientific payload of Mars Express, which is intended to go into orbit around the Red Planet at the end of 2003. The choice of instruments for the orbiting spacecraft was recently ratified by ESA's Science Programme Committee. This month ESA is inviting tenders to build the spacecraft from three industrial competitors, Alenia/Aerospatiale, Dornier and Matra-Marconi, who have already studied the mission. The project must be fully defined in time for the Science Programme Committee to finally confirm Mars Express.
Published: 19 June 1998
Page 138 of 146
— 20 Items per Page
Showing 2,741 - 2,760 of 2,907 results.
19-Apr-2024 23:40 UT

ShortUrl Portlet

Shortcut URL

https://sci.esa.int/p/QwQ7rr8