Credit & Copyright: Dennis Mammana (Skyscapes)Explanation: On planet Earth, an analemma is the figure-8 loop you get when you mark the position of the Sun at the same time each day throughout the year. But similarly marking the position of the Sun in the Martian sky would produce the simpler, stretched pear shape in this digital illustration, based on the Mars Pathfinder project's famous Presidential Panorama view from the surface. The simulation shows the late afternoon Sun that would have been seen from the Sagan Memorial Station once every 30 Martian days (sols) beginning on Sol 24 (July 29, 1997). Slightly less bright, the simulated Sun is only about one third the size as seen from Earth, while the Martian dust, responsible for the reddish sky of Mars, also scatters some blue light around the solar disk. Astronomer Dennis Mammana offers the illustration to mark the hopeful beginning of an exciting new era of robotic exploration of the Red Planet, with two new Mars missions now enroute and one preparing to launch.
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A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture Of the Day
Publications with keywords: analemma - Mars - Sun - sky
Publications with words: analemma - Mars - Sun - sky
- APOD: 2023 November 19 Á Space Station, Solar Prominences, Sun
- APOD: 2023 November 7 Á A Martian Dust Devil Spins By
- APOD: 2023 October 25 Á Gone in 60 Seconds: A Green Flash Sunset
- Circular Sun Halo
- Five Meters over Mars
- APOD: 2023 August 1 Á Monster Solar Prominence
- APOD: 2023 July 11 Á Sunspots on an Active Sun