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see infrared astronomyinfrared astronomy,
study of celestial objects by means of the infrared radiation they emit, in the wavelength range from about 1 micrometer to about 1 millimeter. All objects, from trees and buildings on the earth to distant galaxies, emit infrared (IR) radiation.
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(koh -bee) Abbrev. for Cosmic Background Explorer. A NASA orbiting satellite launched Nov. 18 1989 and dedicated to the study of the cosmic microwave background radiation, and hence to cosmology. The mission ran for just over four years, being terminated by NASA on Dec. 23 1993.

COBE's scientific payload consisted of three instruments shielded from the adverse thermal and radiation effects of the Sun and Earth. Two cryogenically cooled instruments observed the sky at infrared wavelengths. DIRBE, the diffuse infrared background experiment, mapped the sky at 10 wavelengths over 1–300 μm in search of the cumulative uniform glow from earliest luminous objects. FIRAS, the far-infrared absolute spectrophotometer, measured the average temperature of the background with unprecedented precision: it showed the spectrum of the microwave background to be a perfect black body curve characteristic of a temperature of 2.735 ± 0.06 K. FIRAS was turned off after 10 months of flight when the helium coolant ran out.

The third detector, the DMR (differential microwave radiometer), consisted of six differential radiometers observing the sky at three radio wavelengths – 3.3, 5.7, and 9.5 mm. They made whole-sky surveys and were designed to detect any fluctuations in the brightness of the microwave background.

The microwave background is not completely uniform, showing a slight dipole anisotropy with an enhancement of one part in a thousand in the direction of the Galaxy's motion and an equal and opposite deficit in the opposite part of the sky. This results from the real motion of the Galaxy relative to the fixed background. It was announced in April 1992 that careful statistical analysis of the COBE measurements also revealed even weaker temperature fluctuations of one part in one hundred thousand on scales of ten degrees and larger. These are the imprints of quantum fluctuations in the early Universe. Further study of such fluctuations by such missions as the Wilkinson Microwave Anisotropy Probe have served to constrain cosmological models that determine how the early inhomogeneities collapsed to form the large-scale structure we see in today's Universe.

References in periodicals archive ?
"Because (Carlson)'s veil-piercing claim amounts to an impermissible collateral attack, we conclude that the District Court did not err in granting summary judgment against (Carlson) and in favor of the CoBe defendants," wrote Court of Appeals judge Heidi S.
Anyone with information about improper contact between Cobe and juveniles should call Newport police Detective Mitch France, 541-574-3348.
The COBE data confirmed scientists' estimates that most of the EBL would appear as infrared light, because light from stars in distant galaxies gets shifted to longer wavelengths as the universe expands.
Oder word, S.J.New mark, and G-smart, "A study of external glacises Detected by the COBE, diffuse infrared background 'experiment', for cosmic Background Radiation Discovery", Astronomical Journal, 500(2): (1998): 554-568
The model could also explain the all-sky dust-correlated component seen at >7[degrees] scales in the COBE DMR maps by Kogut et al.
Je suis de l'ere Cobe Century, et je sais que bon nombre d'entre vous etes de l'epoque Drake-Willock ou de Gambro AK-10 en ce qui a trait a la technologie en hemodi-alyse.
At the same time, it is known that two satellites, namely COBE [18] and WMAP [19], support the cosmological interpretation [2].
The lecture by Mather describes the COBE project in cosmic background radiation, and that of Smoot describes how the project is helping to determine conditions in the early stages of the universe.
Regardless of the amount of assets that must be transferred, final regulations dealing with continuity of business enterprise (COBE) (Kegs.
Their work was based on measurements conducted with the help of the COBE satellite launched by NASA in 1989.