Two comets whiz past Earth this week — here’s how to see the cosmic twofer

After a year devoid of comets visible to the naked eye, two of the celestial entities — C/2025 A4 (Lemmon) and C/2025 R2 ...

Constraints on solar power satellites are more ground-based than space-based, says study

Space-based solar power has been gaining more and more traction recently. The recent success of Caltech's Space Solar Power ...

Double space comets Lemmon, Swan to fly near Earth

A rare encounter of two comets this week will have stargazers in awe after nearly a year of no easily seen comets.

3I/ATLAS: Natural or engineered? Everything we know about it's Sun-pointing jet and 'human-manufactured' theory that stunned astronomers

Astronomers are puzzled by the interstellar comet 3I/ATLAS. It displayed a jet pointing towards the Sun, a behavior never ...