NASA will launch a LASP-built astronomy experiment to study the chemistry involved in the formation of stars and planets in the Milky Way galaxy. The Colorado High-resolution Echelle Stellar Spectrograph, or CHESS 4, is scheduled for launch on April 13 from Kwajalein Atoll in the Marshall Islands on a NASA Black Brant IX sounding rocket.
The CHESS-4 mission will study the interstellar medium, the matter between stars. The mission focuses on translucent clouds of gas that provide the fundamental building blocks for stars and planets. These clouds have very low densities and the only way to study them is to measure how a cloud is affected by a star—and its associated outpouring of stellar material, the stellar wind—moving through it. CHESS will point at the star Gamma Ara, in the constellation Ara.
Satellites provide data daily on our own planet, our sun and the universe around us. The instruments on these spacecraft are constantly bombarded with solar particles and intense light, not to mention the normal wear and tear from operating in space.
If it were a car that’s a few years old, you would take it to the mechanic for a tune-up to make sure it continues running smoothly. However, with a spacecraft it’s not that easy. Thus, scientists may turn to calibration flights to make sure the instruments are kept up to snuff and providing validated data.
One such flight will be the Extreme UltraViolet (EUV) Variability Experiment, or EVE, from the University of Colorado, Boulder, to observe the sun from a NASA Black Brant IX sounding rocket at 3:02 p.m. EDT May 25 at the White Sands Missile Range in New Mexico.
On March 23, 2011, LASP launched a sounding rocket intended to calibrate the Extreme ultraviolet Variability Experiment (EVE) on the NASA Solar Dynamics Observatory (SDO). The rocket carries an almost exact replica instrument as the satellite version SDO EVE instrument, which will help to determine any long-term degradation of the EVE optical system and will enable EVE to obtain the most accurate measurements possible of solar irradiance.