Latest Planck Stories

2009-05-05 12:01:52

The European Space Agency's Herschel and Planck spacecraft are fueled and awaiting launch, with U.S. scientists playing important roles in both projects. The twin spacecraft are to lift off May 14 aboard an Ariane 5 rocket from the Guiana Space Center in French Guiana. The missions are quite different, but they'll hitch a ride to space together, said Ulf Israelsson, NASA project manager for both Herschel and Planck at NASA's Jet Propulsion Laboratory in Pasadena, Calif. NASA said Herschel's...

2009-04-28 13:55:24

The European Space Agency says it has set the liftoff date for its twin satellites, Herschel and Planck, from Europe's spaceport in French Guiana. The ESA said additional checks on the Ariane 5 ECA launcher have been completed, allowing Arianespace and ESA to schedule the launch for May 14. Herschel and Planck have already been fueled with hydrazine. Planck's three-stage active cryogenic cooler, needed to keep its instruments at extremely low temperatures, has been filled with helium-3 and...

2009-04-28 06:55:00

Now that additional checks on the Ariane 5 ECA launcher have been completed, Arianespace and ESA have set the launch date of Herschel and Planck for Thursday May 14. In the meantime, the preparation of the two satellites for launch continues flawlessly at Europe's Spaceport in French Guiana. Herschel and Planck have already been fuelled with hydrazine. Planck's three-stage active cryogenic cooler, needed to keep the instruments at extremely cold temperatures, has been filled with helium-3 and...

2009-04-23 08:52:27

Tests conducted on Planck at Europe's Spaceport in Kourou, French Guiana, have confirmed that the satellite's subsystems work perfectly, and the helium dilution cooler tanks have now been filled. While the final clean-up continues, the solar array has been checked, the satellite has been integrated with its launcher adapter and fuelling is complete. The last of the system reference tests, of the telemetry and telecommand subsystem, was completed on 17 March. The tests, carried out over the...

2009-04-22 12:46:45

About two weeks ago, Herschel was weighed to record its dry mass before the satellite was fuelled with 256 kg of liquid hydrazine. After switching it on to confirm normal function, engineers integrated the fuelled satellite with the Ariane 5 adapter. On 26 March, the satellite's weight was measured with reference to calibrated masses for maximum accuracy. After this it was moved to another building on the launch site to begin fuelling operations. Herschel fuels up Herschel will use its...

2009-04-20 15:25:00

The European Space Agency on Monday announced a short delay of the Herschel and Planck telescopes to give ESA and Arianespace additional time to complete final and independent checks. Both Herschel and Planck telescopes were set to launch May 6, but ESA officials announced that date would be pushed back "due to an anomaly discovered during tests on a subassembly identical to the one on the Ariane 5 launcher," according to a press release. ESA added that both satellites are "in perfect...

2009-04-14 11:16:16

Over the past few weeks, the upper part of Planck's outer solar array has been covered with multi-layer insulation, the satellite has been prepared for upcoming helium filling operations, several sub-system functional tests have been carried out and it has undergone final cleaning before launch. Multiple layers of insulation On Wednesday 4 March, multi-layer insulation (MLI) was fitted on the upper part of the outer solar array at the base of the service module. Both the insulation and the...

2009-04-14 09:48:18

Herschel's three scientific instruments have passed their functional tests and are 'good to go'. This marks another milestone in the steady progress being made in preparing the satellite for launch. All three of Herschel's instruments, the Spectral and Photometric Imaging Receiver (SPIRE), the Photodetector Array Camera and Spectrometer (PACS) and the Heterodyne Instrument for the Far Infrared (HIFI), underwent short functional tests to verify the health of the instruments after transport to...

2009-04-08 14:15:00

With the additional checks related to the flight worthiness of the Herschel telescope now completed, ESA and Arianespace have set the launch date of Herschel and Planck for May 6 2009. Over the last few days, during the final cross-check of the Herschel telescope documentation carried out by an independent panel of experts led by the ESA Inspector General and Arianespace, it has been confirmed that the required safety margins are met and the telescope is fully qualified for launch. The...

2009-04-02 13:53:44

The European Space Agency has again postponed scheduling a joint launch date for its Herschel and Planck spacecraft. The space agency said the latest delay was initiated despite verification of operational procedures for the satellites. However, during final checks on the spacecraft, concerns have arisen and a short delay is proposed in order to allow ESA and Arianespace to carry out a final and independent check of the safety margins, the ESA said in a statement. The ESA last month postponed...

Latest Planck Reference Libraries

2004-10-19 04:45:40

Wilkinson Microwave Anisotropy Probe (WMAP) -- The Wilkinson Microwave Anisotropy Probe (WMAP) was launched on June 30, 2001 at 3:46 p.m. EDT at Cape Canaveral Air Force Station, Florida, USA. The goal of WMAP was to map out minute differences in the Cosmic Microwave Background (CMB) radiation which would help test theories of the nature of the universe. On February 11, 2003, the public relations group from NASA made a press release regarding the age and composition of the universe....

More Articles (1 articles) »
Word of the Day
  • Nautical, the visiting and carousing of sailors in the Greenland ships.
This word is apparently from a confusion of two similar Dutch words: 'mallemerok,' a foolish woman, and 'mallemok,' a name for some persons among the crew of a whaling vessel.