Abstract: In this work, the robust motion control issues of a dc servo system with parametric uncertainty, disturbances, control effort constraints, and saturation nonlinearity are addressed using the ...

Lineups of planets have often attracted attention for their supposed effects on human affairs—and for several days in early January, five solar system bodies are arranged in a n ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the ...

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

The newly identified cluster of Kuiper Belt objects lies about 4 billion miles from the Sun, offering fresh clues about how ...

A newly identified group of icy bodies in the Kuiper Belt has left astronomers both surprised and intrigued. Led by Amir ...

Scientists have discovered that our entire solar system is racing through the Milky Way far faster than current models ...

The cosmological principle predicts uniformity, and the CMB dipole reflects our 370 km/s motion that radio counts should ...

Astronomers may have uncovered a massive hidden planet far beyond Neptune, using decades-old infrared data. The object’s ...

By tracking tiny stellar wobbles, astronomers have detected planets forming around young stars for the first time.

Scientists tracked interstellar comet 3I/ATLAS and found rotating jets in a rare sun-facing tail during its 2025 pass through ...