June 27, 2013 Launch of IRIS on a Pegasus-XL rocket. The Interface Region Imaging Spectrograph (or IRIS) is a space probe to observe the Sun by NASA. It is a NASA Small Explorer program mission to investigate the physical conditions of the solar limb, particularly the chromosphere of the Sun. Lockheed Martin Solar and Astrophysics Laboratory (LMSAL) integrated the observatory. June 28, 1451 Sort of the American version of the Medes and Lydians. The Seneca and Mohawk tribes were preparing for war when a total solar eclipse swept over both their camps late in the afternoon of this early summer day. Both immediately sued for peace. June 28, 1489 The previous last total solar eclipse on Easter Island. The last one was on 11 July 2010 and thereafter on 25 February 2324. Joanne and I were in Mangaia for the 2010 eclipse June 28, 1954 Jason G. Porter (June 28, 1954 – July 23, 2005) a solar astronomer at NASA’s Marshall Space Flight Center (MSFC). Jason was born on 28 June 1954 in Texes. He received his PhD from the Department of Astrophysical, Planetary, and Atmospheric Sciences in 1984. His thesis, “Ultraviolet Spectral Diagnostics of Solar Flares and Heating Events,” was written under the guidance of Kathrine Gebbie and Juri Toomre. The ideas behind his thesis and much of his later work were formulated while he was a Graduate Research Assistant at Goddard Space Flight Center (GSFC) working on analysis of data from the Ultraviolet Spectrometer and Polarimeter, a major instrument on the Solar Maximum Mission (SMM). While at Goddard, he met his wife-to-be, Linda Zimmerman, who was working as a computer system administrator at the SMM Operations Center. They married and moved to Huntsville, Alabama in 1984 where Jason had an appointment as an NAS/NRC Resident Research Associate in the Solar Physics Branch of MSFC and Linda was a system administrator for the Space Science Laboratory. After a short stint at the University of Alabama in Huntsville, Jason joined NASA as a Senior Scientist in the Space Science Laboratory in 1987, a position he still held at the time of his death. Jason’s early work brought forth the idea that “microflares” make a significant contribution to the heating of the solar corona, an idea which he continued to champion throughout his career. He also searched for coronal emission from white dwarf stars using the ROSAT and Chandra Space Observatories, and served as the NASA Project Scientist for a lunar based ultraviolet telescope. More recently he was leading a team of engineers and scientists, from MSFC, GSFC, and the National Solar Observatory on the development of a solar ultraviolet magnetograph instrument (SUMI) capable of measuring vector magnetic fields in the upper chromosphere and transition region where the magnetic reconnection that powers solar flares and CMEs is believed to occur. He continued to provide inspiring leadership to the development of SUMI up until the last month of his life. June 28, 2299 Next total solar eclipse for Lebanon which had their last one on 1605 Oct 12. We wont begoing to that one ...
Posted on: Sat, 28 Jun 2014 08:58:23 +0000
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