At least two ingredients are needed to make jets — rotation and magnetic fields — and these produce the ubiquitous laserlike jets we see.

Mercury's visibility is noted to be improving, appearing 7° high an hour before sunrise with a magnitude of –0.3 and a 54% illuminated disk. The planet is approaching its greatest western elongation, ...

The primary observational focus is Jupiter, featuring a transit of its moon Ganymede and its associated shadow. Prior to the transit, Ganymede and Europa will execute a close alignment and pass east ...

Celestron introduces the Moon Mission 100mm Tabletop Dobsonian, a 4-inch f/4 reflector telescope that includes two eyepieces, a finder scope, and a Moon filter, weighing 5.3 pounds with an optical ...

Christian Doppler (1803-1853) studied mathematics, physics, and astronomy, eventually holding academic positions including a professorship and the inaugural directorship of the Institute of Physics in ...

On November 27, Saturn will reach a stationary point in the constellation Aquarius, visible at magnitude 0.9 and positioned 40° high in the southern sky at 8 P.M. EST, with a waxing Moon in close ...

On November 26, Jupiter will execute a passage south of Pollux. Dwarf planet 1 Ceres will achieve a stationary point at 6 P.M. EST in Cetus, subsequently shifting from retrograde to prograde motion, ...

Claude-Louis Mathieu, born in Macon, France, in 1783, demonstrated an early aptitude for mathematics, overcoming familial and financial obstacles to graduate from the Ecole Polytechnique in 1805. His ...

Dave Eicher, Editor Emeritus of *Astronomy* magazine, encourages observers to locate Saturn, the solar system's sixth planet, in the evening sky. During this observational period, Saturn's typically ...

On November 22, Titan will transit Saturn. The Silver Sliver Galaxy (NGC 891), an edge-on spiral measuring 13’ by 3’ and glowing at magnitude 9.9, is observable 3.5° east of Almach (Gamma Andromedae) ...

King Alfonso X "the Wise" (b. 1221) was a noted scholar who pioneered the translation of Arabic and Andalusian astronomical works into vernacular Castilian. His multicultural court was active in ...

The Celestron Moon Mission Travel Scope 70 is presented as a 2.8-inch f/5.7 refractor telescope, retailing for $109.95, complete with 10mm and 20mm eyepieces, a 45° erect image diagonal, a 3x Barlow ...