Abstract: In the servo system, input signals often easily reach a state of saturation, resulting in the discrepancies between the controller's output and the actual application requirements. To ...

The Geminids are peaking this weekend. Amateurs and experts regard the dazzling celestial display as one of the year’s best meteor showers.

Abstract: A critical problem in operation of power gird company is identifying the key elements of brand value. This paper introduces the Power Grid Brand Value (PGBV) model based on complex network ...

Locked inside a frozen rock from the edge of the world is a story that began before Earth had oceans, continents or even a ...

Scientists have discovered living microbes producing methane in the fractured rocks deep inside Sweden's Siljan impact crater, offering insights into Earth's earliest life and the search for life ...

NASA's Perseverance rover spotted a possible space rock on the surface of Mars. The meteorite's nickname is 'Phippsaksla.' NASA's Perseverance Mars rover has found a possible meteorite on the surface ...

Amateur sky watchers believe a meteorite fell to earth in northeast Michigan Sunday morning, Nov. 23, and many people have posted video online of the space debris streaking overhead. Michigan Storm ...

NASA’s Perseverance Mars rover has made another strange discovery. While investigating the Vernodden area of Jezero Crater – the crater where the rover first landed on the Red Planet in February 2021 ...