Several common features of the daytime sky are interacting in uncommon ways, in this picture captured in West Greece, by Alexandros Maragos.
A crescent Venus shines along the western horizon with the slender, young crescent Moon, at dusk in this winter sky. Image © Christoph Malin (TWAN)
This remarkable shot shows the Russian missile’s contrail being yanked back and forth by winds at different levels of the atmosphere. Captured European Space Agency
The photo above showing a colorful contrail, was captured high over Murrieta, California on August 3, 2013. The pastel colors are a result of diffraction
Researchers at NASA have just begun a series of flights using the agency’s DC-8 to study the effects of alternate biofuel on engine performance, emissions
The photo above showing a stunning prairie sunset and a jumble of contrails checkering the twilight sky was taken from my home in DeKalb County,
This is the sky above Davos, Switzerland, calligraphed with clouds. In actuality, they’re remnant contrails from Swiss Air Force F/A-18s jets made some hours before.
NASA has just confirmed that biofuels reduce jet engine pollution.