*NASA History Listserv Readers: * * * Passing along a reminder that the Albatrosses Aerospace History Seminar will meet again at 4:00 p.m. EST on April 29, 2021. Best, Brian Brian C. Odom, PhD, MLIS (He/Him)// Acting NASA Chief Historian NASA Headquarters Washington, DC 256-541-8974 (cell) *From: *"'Neufeld, Michael' via Albatross SIG" <albatross-sig@googlegroups.com> *Reply-To: *neufeldm <neufeldm@si.edu> *Date: *Tuesday, April 20, 2021 at 8:39 AM *To: *Albatross-SIG & ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3134 Issue Time: 2021 Apr 20 0459 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3133 Begin Time: 2021 Apr 17 1715 UTC Yesterday Maximum 2MeV Flux: 10148 pfu NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Su ...Continue Reading

:Product: Solar Region Summary :Issued: 2021 Apr 20 0030 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Region Summary SRS Number 110 Issued at 0030Z on 20 Apr 2021 Report compiled from data received at SWO on 19 Apr I. Regions with Sunspots. Locations Valid at 19/2400Z Nmbr Location Lo Area Z LL NN Mag Type 2816 S24E21 262 0120 Dai 08 08 Beta 2817 N18W46 329 0060 Bxo 05 08 Beta IA. H-alpha Pl ...Continue Reading

The following sections have been updated in the past 7 days. ------------------------------------------------------------------------ -- FIRES (1 updated event, 1 new image) -- FIRE AND HAZE IN SOUTHERN ASIA Hazy skies are a common occurrence in some parts of southern Asia due to fires, dust storms, and urban pollution. * A Fierce Fire Season in Nepal (Image from Apr 5, 2021; Posted Apr 14, 2021) https://earthobservatory.nasa.gov/images/148185/a-fierce-fire-season-in-nepal/?src=nha -- VOLCANOES (1 updated event, ...Continue Reading

April 19, 2021 RELEASE 21-039*NASA’s Ingenuity Mars Helicopter Succeeds in Historic First Flight* Ingenuity's Shadow NASA’s Ingenuity Mars Helicopter captured this shot as it hovered over the Martian surface on April 19, 2021, during the first instance of powered, controlled flight on another planet. It used its navigation camera, which autonomously tracks the ground during flight. */Credits: NASA/JPL-Caltech/* Monday, NASA’s Ingenuity Mars Helicopter became the first aircraft in history to make a powered, ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3133 Issue Time: 2021 Apr 19 0941 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3132 Begin Time: 2021 Apr 17 1715 UTC Yesterday Maximum 2MeV Flux: 14078 pfu NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Su ...Continue Reading

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #21-18 2021 April 18 at 7:30 p.m. MDT (2021 April 19 0130 UTC) **** SPACE WEATHER OUTLOOK **** Summary For April 12-18 G1 (Minor) geomagnetic storm levels were reached on 15 April due to possible effects from a 10 Apr coronal mass ejection. Additional G1 (Minor) geomagnetic storm levels were reached on 16-17 Apr due to influence from a negative polarity, coronal hole high ...Continue Reading

:Product: Solar Region Summary :Issued: 2021 Apr 19 0030 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Region Summary SRS Number 109 Issued at 0030Z on 19 Apr 2021 Report compiled from data received at SWO on 18 Apr I. Regions with Sunspots. Locations Valid at 18/2400Z Nmbr Location Lo Area Z LL NN Mag Type 2816 S25E34 263 0050 Cao 07 05 Beta IA. H-alpha Plages without Spots. Locations Valid at 18/ ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3132 Issue Time: 2021 Apr 18 0504 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3131 Begin Time: 2021 Apr 17 1715 UTC Yesterday Maximum 2MeV Flux: 1252 pfu NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Sub ...Continue Reading

:Product: Solar Region Summary :Issued: 2021 Apr 18 0030 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Region Summary SRS Number 108 Issued at 0030Z on 18 Apr 2021 Report compiled from data received at SWO on 17 Apr I. Regions with Sunspots. Locations Valid at 17/2400Z Nmbr Location Lo Area Z LL NN Mag Type 2814 S22W59 009 0010 Bxo 04 04 Beta 2816 S24E46 264 0020 Cao 07 04 Beta IA. H-alpha Pl ...Continue Reading