You'd need a lot of dust but, provided you could get it into space, it would essentially work to reduce solar radiation, blocking around 1% to 2% of the light.

Abu Dhabi’s Shams solar power plant, owned by state-owned renewable energy company Masdar, Abengoa SA and Total SA, will receive less energy than planned because of dust particles in the area ...

NASA's Curiosity Rover has caught its first image of the sunset on Mars as it began a new campaign observing clouds over the Red Planet at twilight.

These are also known as crepuscular rays, from the Latin word for "twilight". "It was the first time sun rays have been so clearly viewed on Mars," according to the mission officials.

Scientists have detected the sun emitting an extraordinary amount of gamma rays — light wavelengths known to carry the most energy of any other wavelength in the electromagnetic spectrum.

Researchers plan to spray sunlight-reflecting particles into the stratosphere, an approach that could ultimately be used to quickly lower the planet’s temperature.