Ground-based telescopes have long contended with atmospheric turbulence that diminishes image clarity, and the advent of adaptive optics combined with laser guide stars has been transformative in ...

At the Paranal Observatory in Chile, the UT4 telescope doesn’t just observe the stars—it actively creates artificial stars to combat atmospheric interference. By shooting powerful lasers into the sky, ...

A team in France has reported what is claimed to be a novel kind of laser emitting in the orange region of the spectrum, suggesting potential applications in flow cytometry and laser guide stars for ...

The successful creation of a guide star above the European Southern Observatory (ESO) Paranal site in Chile with freshly installed lasers marks a new era of interferometry, according to the ESO team.