California firm Reflect Orbital plans 4,000 reflectors to beam light over cities and power sites, alarming astronomers and dark-sky advocates.

A company called Reflect Orbital wants to illuminate the Earth after sunset with orbital sky mirrors, raising alarm bells.

Recently discovered Comet C/2025 R3 (PanSTARRS) will make its closest approach to the sun and Earth in late April and could potentially be visible to the naked eye. It may end up being the brightest ...

A solar generator can be a lifesaver during natural disasters or power outages. Here are the two we recommend buying for both small- and large-scale use.

Explore how a basic LED can be used as a tiny solar cell, generating measurable voltage under sunlight. This hands-on ...

Yesterday, global energy leaders celebrated the groundbreaking of the Lucy Solar Project, a 350-megawatt (MW) utility-scale solar farm located in Concho County. The ceremony, relocated due to weather, ...

Most solar lights are cheap garbage that exist just to put more microplastics into the environment as they degrade in short order. [Jeremy Cook] built his own solar light, however, and this one ...

A reflection-based solar cell design inspired by periscopes achieves near-complete visible transparency and record light ...

U.S. President Donald Trump is meeting with global leaders at the World Economic Forum in Davos, Switzerland. He is promoting ...

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