The extra precession of Mercury—42.9 seconds of arc per century—explained by General Relativity (GR), is the result of a secular addition of 5.02 × 10 −7 rad. at the end of every orbit around the Sun.

Deep in the heart of Central Asia, the Kunlun Mountains form a vital barrier on the northern Tibetan Plateau. Their rainfall ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

Anguilla has established itself as one of the world’s best diving destinations for beginners, with abundant marine life and crystalline waters — you just have to take the plunge.

By capturing the same thing from very different perspectives, a NASA astronaut and an intrepid photographer create a whole ...

OLED TVs I test TVs for a living — here are 3 reasons I’d splurge on OLED over a cheap TV TVs I make a living testing TVs — these are the 5 TVs under $1,000 I'd buy right now ...

Why Birds Migrate The primary reason birds migrate is survival. Most species move to find food and safe places to raise their young. In temperate or polar regions, winters are harsh and food sources ...

Abstract: A celestial navigation system (CNS) can be integrated in vehicles to suppress the diverging error of the inertial navigation system (INS). However, the CNS ...

This guide provides a step-by-step walkthrough on how to calculate road distances and trip durations between pairs of GPS coordinates using the OpenStreetMap API. Clone or download this repository to ...

Understanding diffraction and dispersion is key to optical science, influencing technologies like spectroscopy, fiber optics, ...

IT Home reported on September 6 that from September 7 to 8, 2025, Beijing time, this year's significant astronomical event, the 'Blood Moon' total lunar eclipse, will be visible in the sky, allowing ...