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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. 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. ...

  4. List of spaceflight launches in January–June 2025 - Wikipedia

    en.wikipedia.org/wiki/List_of_spaceflight...

    SPHEREx: NASA: Low Earth Near-infrared astronomy PUNCH-NFI [64] NASA: Low Earth Heliophysics PUNCH-WFI × 3 [65] NASA: Low Earth Heliophysics February (TBD) [66] Electron: Mahia LC-1: Rocket Lab ⚀ Kinéis × 5 Kinéis: Low Earth: IoT Fifth of five dedicated launches for Kinéis' IoT satellite constellation. February (TBD) [6] [67] Long March ...

  5. List of proposed space telescopes - Wikipedia

    en.wikipedia.org/wiki/List_of_proposed_space...

    ZEBRA, Zodiacal dust, Extragalactic Background and Reionization Apparatus [47] A small infrared observatory sent out to 10 AU by NASA [48] Membrane Space Telescope: A concept of huge reflecting telescopes in space, where the primary mirror would be composed of very thin and lightweight membrane, that would be kept in the required accurate shape ...

  6. Fast Infrared Exoplanet Spectroscopy Survey Explorer

    en.wikipedia.org/wiki/Fast_INfrared_Exoplanet...

    Had it been selected for implementation, FINESSE would have launched no earlier than 2022 and lasted at least two years. The other two finalist concepts competing with FINESSE were Arcus (an X-ray space observatory) and SPHEREx (a near-infrared space observatory). In February 2019, it was announced that SPHEREx had been selected. [5]

  7. Young stellar object - Wikipedia

    en.wikipedia.org/wiki/Young_stellar_object

    Class II objects have circumstellar disks and correspond roughly to classical T Tauri stars, while Class III stars have lost their disks and correspond approximately to weak-line T Tauri stars. An intermediate stage where disks can only be detected at longer wavelengths (e.g., at 24 μ m {\displaystyle 24{\mu }m} ) are known as transition-disk ...

  8. 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 ...

  9. Astronomical coordinate systems - Wikipedia

    en.wikipedia.org/wiki/Astronomical_coordinate...

    In astronomy, coordinate systems are used for specifying positions of celestial objects (satellites, planets, stars, galaxies, etc.) relative to a given reference frame, based on physical reference points available to a situated observer (e.g. the true horizon and north to an observer on Earth's surface). [1]