Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Deep Impact 'celebrates' New Year's Eve with Earth flyby

31.12.2007
Earth Flyby and Moon Pics Mark Start of Journey to Hartely 2

This New Year's Eve the University of Maryland-led Deep Impact team will again celebrate a holiday in a way that few can match, when their Deep Impact spacecraft "buzzes" the Earth on a flyby that marks the beginning of a more than two-and-a-half-year journey to comet Hartley 2.

In 2005, the Deep Impact team, led by University of Maryland astronomer Michael A'Hearn, celebrated July 4th by smashing a probe into comet Tempel 1 to give the world its first look inside a comet.

The trip to Hartley 2 is one part of a new two-part mission for the team and its Deep Impact spacecraft. During the first six months of the journey, the Extrasolar Planet Observations and Characterization (EPOCh) mission team will use the larger of the two telescopes on the Deep Impact spacecraft to search for Earth-sized planets around five stars selected as likely candidates for such planets. Upon arriving at the comet the Deep Impact eXtended Investigation (DIXI) will conduct an extended flyby of Hartley 2 using all three of the spacecraft's instruments (two telescopes with digital color cameras and an infrared spectrometer. The name for the new combined mission, EPOXI, is a combination of the names of its component missions (EPOCh + DIXI = EPOXI).

The team is using the flyby of Earth to calibrate the spacecrafts instruments for the new mission and to help slingshot it on the way toward Hartley 2. Although the spacecraft will come closest to the Earth on New Year's Eve, the Maryland-led team has already begun its calibration work.

"On Saturday, 29 December, two days before its close flyby of Earth, the Deep Impact flyby spacecraft made observations of the moon to calibrate its instruments for its new mission, EPOXI," said A'Hearn. "Some calibrations are obtainable only on a bright, large source, like the moon when reasonably close to it. It looks as though everything operated just as the science team asked it to operate and you can't ask for anything better than that,” he said. "

'This Earth gravity assist provided a unique opportunity for us to calibrate our instruments using the Moon," said Jessica Sunshine, a senior research scientist at the University of Maryland. "In particular, the Moon is very useful because it fills the entire field of view of the infrared spectrometer. The results show that our spacecraft pointing and commanding was spot on. We also made measurements which will allow us to cross-calibrate our instruments with telescopic data and, in the very near future, with a wealth of lunar measurements from new orbiting spacecraft. These data will significantly improve the science from EPOCh observations of Earth and the DIXI flyby of comet Hartley 2, as well as from Deep Impact's prime mission to comet Tempel 1," said Sunshine who is deputy principal investigator on DIXI.

Lee Tune | EurekAlert!
Further information:
http://www.umd.edu
http://www.newsdesk.umd.edu/scitech/release.cfm?ArticleID=1564
http://deepimpact.umd.edu/

More articles from Physics and Astronomy:

nachricht Smooth propagation of spin waves using gold
26.06.2017 | Toyohashi University of Technology

nachricht A 100-year-old physics problem has been solved at EPFL
23.06.2017 | Ecole Polytechnique Fédérale de Lausanne

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Study shines light on brain cells that coordinate movement

26.06.2017 | Life Sciences

Smooth propagation of spin waves using gold

26.06.2017 | Physics and Astronomy

Switchable DNA mini-machines store information

26.06.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>