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    Is Webb at Its Final Temperature?

    In this illustration, the multilayered sunshield on NASA’s James Webb Space Telescope stretches out beneath the observatory’s honeycomb mirror

    The Mid-Infrared Instrument (MIRI) on NASA's James Webb Space Telescope is now cooled by a gaseous helium cryocooler to under 7 kelvins. With the cooler in its final state, the Webb team is operating the MIRI instrument this week as part of seventh and final stage of the telescope alignment. When the instrument is operating, …

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    Moderate Solar Flare Erupts From Sun

    Image of the Sun during a solar flare.

    The Sun emitted a moderate solar flare on April 20, 2022, peaking at 9:59 p.m. ET. NASA's Solar Dynamics Observatory, which watches the Sun constantly, captured an image of the event. Solar flares are powerful bursts of energy. Flares and solar eruptions can impact radio communications, electric power grids, navigation signals, and pose risks to …

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    Sun Releases Moderate and Strong Solar Flares

    Image of the Sun capturing a mid-level solar flare.

    The Sun emitted two solar flares on April 19, 2022, one moderate peaking at 9:35 p.m. EST and one strong peaking at 11:57 p.m. EST. NASA's Solar Dynamics Observatory, which watches the Sun constantly, captured an image of both events. Solar flares are powerful bursts of energy. Flares and solar eruptions can impact radio communications, …

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    Sun Releases Significant Solar Flare

    Image of a significant solar flare captured by NASA's Solar Dynamic Observatory.

    The Sun emitted a significant solar flare on April 16, 2022, peaking at 11:34 p.m. EST. NASA's Solar Dynamics Observatory, which watches the Sun constantly, captured an image of the event. Solar flares are powerful bursts of energy. Flares and solar eruptions can impact radio communications, electric power grids, navigation signals, and pose risks to …

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    Webb Will Study Formation, Composition, Clouds of Distant Worlds

    The journey of commissioning the Webb telescope continues this week with the successful cooling of the Mid-InfraRed Instrument (MIRI), through the critical ‘pinch point,' down to its final operating temperature of less than 7 kelvins (-447 degrees Fahrenheit, or -266 degrees Celsius). This was a precondition to completing the seventh and final stage of the …

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    Webb’s Cool View on How Stars, Planets Form

    Finger-like cloud structures in blue against a red background are a cosmic object called the Pillars of Creation

    The ongoing success of the multi-instrument optics alignment for NASA's Webb telescope's near-infrared instruments has moved the attention of the commissioning team to chill as we carefully monitor the cooling of the Mid-InfraRed Instrument (MIRI) down to its final operating temperature of less than 7 kelvins (-447 degrees Fahrenheit, or -266 degrees Celsius). We are continuing other activities during this slow cooldown …

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    Webb’s Mid-Infrared Instrument Cooldown Continues

    "The Mid-Infrared Instrument (MIRI) and other Webb instruments have been cooling by radiating their thermal energy into the dark of space for the bulk of the last three months. The near-infrared instruments will operate at about 34 to 39 kelvins, cooling passively. But MIRI's detectors will need to get a lot colder still, to be …

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    Like an Outdoor Nightclub: Q&A on Pulsating Auroras

    NASA's citizen science projects are collaborations between scientists and interested members of the public. Through these collaborations, volunteers known as citizen scientists have helped make thousands of important scientific discoveries. Aurorasaurus is one such project that tracks auroras around the world in real time via reports on its website and on Twitter. Aurorasaurus often partners …

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    NASA’s TRACERS Mission Passes Key Milestone, Advances Toward Launch

    Animated graphic showing solar wind blowing against giant magnetic bubble surrounding Earth, with two funnels in the bubble at the north and south poles

    NASA's Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites mission, or TRACERS mission, has passed a critical mission review on March 31, 2022. The mission now moves into its next phase, advancing towards its target launch readiness date of July 27, 2024. "We're excited to pass this major milestone and get one step closer to launch," …

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    Webb Completes First Multi-Instrument Alignment

    In this illustration, the multilayered sunshield on NASA’s James Webb Space Telescope stretches out beneath the observatory’s honeycomb mirror

    The sixth stage of aligning NASA's James Webb Space Telescope's mirrors to its scientific instruments so they will create the most accurate and focused images possible has concluded. While the Mid-Infrared Instrument (MIRI) continues its cooldown, optics teams have successfully aligned the rest of the observatory's onboard instruments to Webb's mirrors. Previous alignment efforts were …

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