Aurora Borealis and Aurora Australis by Ensign February 20, 2021 0 An aurora is a natural phenomenon that creates bright and colorful light displays in the sky. In the Arctic Circle, ...
Averted Vision by Ensign February 20, 2021 0 Viewing an object by looking slightly to its side. This technique can help you detect faint objects that are invisible ...
Axis by Ensign February 20, 2021 0 Also known as the poles, this is an imaginary line through the center of rotation of an object.
Azimuth by Ensign February 20, 2021 0 An object's cardinal direction, such as north, east, south, or west.
B Ring by Ensign February 20, 2021 0 The middle of the three rings of Saturn that are easily seen in a small telescope.
Baily’s Beads by Ensign February 20, 2021 0 A few "beads" of sunlight, shining between mountain peaks and through the valleys along the Moon's edge in the moment ...
Bar by Ensign February 20, 2021 0 A unit of measure of atmospheric pressure. One bar is equal to 0.987 atmospheres, 1.02 kg/cm2, 100 kilopascal, and 14.5 ...
Barlow Lens by Ensign February 20, 2021 0 A lens that's placed into the focusing tube to effectively double or triple a telescope's focal length and, in turn, ...
Barycenter by Ensign February 20, 2021 0 The common center of mass about which two or more bodies revolve.
Beacon by Ensign February 20, 2021 0 Downlink from a spacecraft that immediately indicates the state of the spacecraft as being one of several possible states by ...
