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2. SPHEREx - Wikipedia

   en.wikipedia.org/wiki/SPHEREx

   SPHEREx will use a spectrophotometer to perform an all-sky survey that will measure near-infrared spectra from 0.75 to 5.0 micrometers. It will employ a single instrument with a single observing mode and no moving parts to map the entire sky (in 96 different color bands, far exceeding the color resolution of previous all-sky maps [4]) four times during its nominal 25-month mission; the crucial ...

3. IXPE - Wikipedia

   en.wikipedia.org/wiki/IXPE

   Imaging X-ray Polarimetry Explorer, commonly known as IXPE or SMEX-14, is a space observatory with three identical telescopes designed to measure the polarization of cosmic X-rays of black holes, neutron stars, and pulsars. [6] The observatory, which was launched on 9 December 2021, is an international collaboration between NASA and the Italian ...

4. Polarimeter to Unify the Corona and Heliosphere - Wikipedia

   en.wikipedia.org/wiki/Polarimeter_to_Unify_the...

   Ten degrees from the Sun, the K-corona is 1000x fainter than the background stars, [11] requiring precise photometric calibration across the individual cameras, to measure and remove the background starfield, galaxy, and related features—which constitute 99.9% of the light incident on the cameras. The camera images are co-aligned to within 0. ...

5. Extreme-ultraviolet Stellar Characterization for Atmospheric ...

   en.wikipedia.org/wiki/Extreme-ultraviolet...

   The mission targets stars with a range of ages and activity levels, and places an emphasis on stars with known exoplanets. 2) A deep monitoring survey (~2 weeks per star) of 24 targets-of-interest to measure the stellar flare frequency distribution and constrain the coronal mass ejection (CME) rate and high-energy particle fluence from these ...

6. 5 Best Free VPNs for 2023 - AOL

   www.aol.com/5-best-free-vpns-2023-191243494.html

   2. Hotspot Shield Free VPN. Hotspot Shield is one of the best free VPNs with unlimited data. It is also easy to use and allows for a Google Chrome extension. Additionally, Hotspot Shield Free VPN ...

7. Advanced Telescope for High Energy Astrophysics - Wikipedia

   en.wikipedia.org/wiki/Advanced_Telescope_for...

   The Athena X-ray observatory consists of a single X-ray telescope [8] [9] with a 12 m focal length, with an effective area of approx. 1.4 m 2 (at 1 keV) and a spatial resolution of 5 arcseconds on-axis, degrading gracefully to less than 10 arcseconds at 30 arcminutes off-axis. The mirror is based on ESA's Silicon Pore Optics (SPO) technology.