Years ago I would have melted lead and poured it into the object to be weighted, maybe used a form to cast it first if there was danger of the object melting and letting liquid lead run everywhere.

Finding could have applications in acoustic-levitation-assisted 3D printing, mid-air chemical synthesis and micro-robotics ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

In the European Physical Journal Plus, Rafelski and two colleagues mathematically demonstrated that the existence of CUDOs (compact ultra dense objects) do not have dark matter, but are filled with ...

Shoujun Wang does research on high energy density laser-created plasma physics at Colorado State University’s Laboratory for Advanced Lasers and Extreme Photonics. A research team led by Colorado ...

These hypothetical stars are the densest objects in the universe that can exist without becoming full-fledged black holes. When you purchase through links on our site, we may earn an affiliate ...

If there is a very dense object such as a black hole or large star in the foreground, whatever is shining from behind it ...

Astronomers suspect that in the first second after the universe formed, the very first black holes also formed. These tiny though profoundly dense objects — think of an atom-sized particle wielding ...

Astronomers have broken two records in one thanks to an incredible serendipitous alignment of cosmic objects. It's the highest resolution detection of a gravitationally lensed radio arc, and within it ...

This is the first image of Sagittarius A*, the supermassive black hole at the center of our galaxy, captured by the Event Horizon Telescope (EHT) and released in 2022. NASA via Getty Images In 1915, ...