|· Bize Yazın|
3 Ağustos 2015
A Proton Arc Over Lake Superior
Görüntü Katkısı ve Telif Hakkı : Ken Williams
|Açıklama : The setting had been picked out -- all that was needed was an aurora. And late last August, forecasts predicted that an otherwise beautiful night sky would be lit up with auroral green. Jumping into his truck, the astrophotographer approached his secret site -- but only after a five hour drive across the rural Upper Peninsula of Michigan. What he didn't know was that his luck was just beginning. While setting up for the image, a proton arc -- a rare type of aurora -- appeared. The red arc lasted only about 15 minutes, but that was long enough to capture in a 30-second exposure. As the name indicates, proton arcs are caused not by electrons but by more massive protons that bombard the Earth's atmosphere following an energetic event on the Sun. In the featured image, the yellow lights on the horizon are the city lights of Marquette, Michigan, USA. The blue and yellow rocks in the Lake Superior foreground are lit by a LED flashlight. Also captured, to the left of the red proton arc, was the band of our Milky Way Galaxy.|
|Yarınki Görüntü : galaxies cluster|
|| | | ||
<< | Arşiv | Dizin | Araştırma | Takvim | Bugünkü Görüntü | | Sözlük | Eğitim | Hakkında | Tartışma | >>
Çeviri ve Düzenleme
Hazırlayanlar: Robert Nemiroff (MTU) ve Jerry Bonnell (UMCP)
NASA Yetkilisi: Phillip Newman Özel haklar uygulanır.
Gizlilik İlkeleri ve Önemli Uyarılar
NASA / Goddard Uzay Uçuşları Merkezi (GSFC)
Gök Fiziği Bölümü (ASD) ve
Michigan Teknoloji Üniversitesi'nin bir hizmetidir.
|[ MT ]|