This article was updated Feb. 28, 2023. It was originally published March 1, 2000. Planetary gears can supply high levels of torque and high-speed reduction. They are also relatively compact ...

A planetary alignment goes down, up high, when more than two planets align in the sky. If three planets align, it’s known as a mini-planetary alignment; ...

With no Moon in the sky, we're centering on M15, which stands 60° high in the southern sky around 3:30 A.M. local daylight ...

The planetary defense mecha were on high alert By Annalee Newitz Published April 8, 2013 | Comments (0) 𝕏 ...

Planetary gears convert high-speed, low-torque inputs to low-speed, high-torque outputs. Some clearance is needed for a planetary gearhead to work effectively.

From his backyard in Arizona, astrophotographer Andrew McCarthy has captured stunning photos of the celestial objects high above us. His recent photo of the planetary parade has hundreds of thousands ...

Packing a compact design, along with high torque and low-speed outputs, the new SEW PPK and SEW P2.e planetary gear units from SEW-EURODRIVE offer new capabilities in continuous heavy duty ...

The World Meteorological Organization announced Thursday that the panel has disqualified the previous all-time planetary high temperature of 136 degrees recorded at El Azizia in present-day ...

Limits on High-Frequency Gravitational Waves in Planetary Magnetospheres. Physical Review Letters , 2024; 132 (13) DOI: 10.1103/PhysRevLett.132.131402 Morgan Hollis.