DAS General Meeting - “Aurora and Airglow” w/Dr. Roger Clark скачать в хорошем качестве

DAS General Meeting - “Aurora and Airglow” w/Dr. Roger Clark

July General Membership Meeting Our Presenter: Dr. Roger Clark earned his Ph.D. in Planetary Science at MIT in 1980. Dr. Clark’s expertise is in identifying and mapping minerals and other compounds on the Earth, other planets, and their satellites using imaging spectroscopy. He has published over 350 scientific papers, including papers on every planet in the solar system. In 2009, he discovered widespread water on the surface of the Moon. He led the USGS environmental assessment of the World Trade Center Disaster. Dr. Clark has served on numerous science teams for NASA missions and is currently part of the science team for the Europa Clipper mission, which is en route to Jupiter. He’s also on the EMIT science team, which oversees an imaging spectrometer on the International Space Station. EMIT is mapping the Earth using Clark’s software, run by NASA on computers at JPL. Dr. Clark is a senior scientist with the Planetary Science Institute. Presentation: Aurora and airglow produce beautiful colors in the night sky. In modern days, people flock to see the aurora. On the other hand, airglow can be a bane to deep sky astrophotographers. Auroras can occur on any planet with an atmosphere and can be focused by magnetic fields. Auroras have been detected on Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and might exist on Pluto. Auroras also occur on some satellites of planets. In this talk, Dr. Clark will discuss the causes of aurora and airglow. Aurora and airglow produce the same colors due to the same transitions in atoms in the upper atmosphere, but with different excitation mechanisms. The main part of the talk will discuss how, when, and where to see aurora, including travel to higher latitudes. The talk will include images, timelapses, and real-time videos of aurora. **** Open to members and non-members alike, the Monthly General Meetings feature club announcements, member observing reports, and a headline guest speaker. Speakers typically hail from one of Colorado’s many science or technical organizations and share their experiences on a wide range of astronomy topics.