Album: Earth & Universe,
New uploads: 31,
Hits: 3989,
Size: 2MiB
Extra-vehicular activity (EVA) is work done by an astronaut away from the Earth, and outside of a spacecraft. The term most commonly applies to an EVA made outside a craft orbiting Earth (a spacewalk), but also applies to an EVA made on the surface of the Moon (a moonwalk)...
Album: Fauna & Flora,
New uploads: 5,
Hits: 357,
Size: 0MiB
The herons are wading birds in the Ardeidae family. There are 64 recognised species in this family. Some are called egrets or bitterns instead of herons. Within the family, all members of the genera Botaurus and Ixobrychus are referred to as bitterns, and—including the Zigzag Heron or Zigzag Bittern—are a monophyletic group within the Ardeidae...
Album: Pictures of the Day,
New uploads: 63,
Hits: 2229,
Size: 3MiB
A POTD is an acronym for "Photo of the Day", "Picture of the Day", "Post of the Day" or "Poll of the Day". It is a term most commonly used by online digital photography communities as an honor to outstanding photos that are selected daily from among that community's membership.
They can either be tagged as POTD or displayed in a special page on that site...
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