It took 30 days for the JWST to travel nearly a million miles (1.5 million kilometers) to its permanent home: Lagrange point 2— a gravitationally stable location in space. The telescope arrived at L2, the second sun-Earth Lagrange point on Jan. 24, 2022. L2 is a spot in space near...
Located at a virtual stop location within OSIM, the PIM records superimposed shadow images of pupil alignment reference (PAR) targets located in the OSIM and SI pupils. The OSIM Pupil Imaging Module was described by Brent Bos, et al, at SPIE in 2011 prior to ISIM testing. We have recently...
LOCATION IN SPACE: Orbiting the Sun around the second Lagrange point (L2), approximately one million miles from Earth INSTRUMENTS: Near-infrared Camera (NIRCam), near-infrared spectrograph (NIRSpec), mid-infrared instrument (MIRI), and near-infrared imager and slitless spectrograph (NIRISS) with...
aWe will deploy the James Webb Space Telescope (JWST) to glimpse back in time to the formation of the first stars and galaxies, while our New Horizons mission will uncover knowledge about Pluto and Kuiper Belt objects in the farthest reaches of our solar system. 而我们新的天际使命在 (最远...
Astronomers have found high-altitude clouds formed from quartz crystals on the gas-giant world WASP-17b
If JWST's "horizon" for this sort of science is a radius of X parsecs, then a future instrument with 4 times the light gathering would extend it to 2X parsecs, and a volume in space 8 times greater. JWST will be the beginning of a great exploration outwards that will never conclude ...
also called the magnetic dip equator. At this location, theE × Bforce moves ions up in altitude, generating the ‘plasma fountain’, producing a depletion of plasma at the magnetic dip equator and enhancements in plasma density at either side of it as the plasma diffuses back down due...
(changing wind speed with height) that allowed the researchers to track the equatorial jet stream. Each pair of images shows the same location 10 hours apart, revealing how far the features have moved in that time. Credit: NASA, ESA, CSA,...
The initial ice composition is set in the cold, dense parts of molecular clouds, before the onset of star formation. With the exquisite sensitivity of the James Webb Space Telescope, this critical stage of ice evolution is now accessible for detailed study. Here we show initial results of the...
In fact, engineers had to use a little unobtainium to build the one-of-a-kind chassis, the backbone that will hold the spacecraft together. Unobtainium isn’t just the name of the material mined in James Cameron’s movie “Avatar.” It is a word used in engineering — and sometimes ...