The satellite-streaked sky

The rise of megaconstellations is changing the night sky forever and forcing astronomers to adapt.

Starmus rocks Armenia

In September 2022, the sixth Starmus Festival brought its unique combination of talks by luminaries, observing the cosmos, an imaging workshop, and rock ’n’ roll to a historic world site.

Plan for the 2024 total solar eclipse

On April 8, 2024, totality will sweep across North America. Are you ready for it?

A history of solar eclipses

Eclipses have held sway over humanity since long before we knew what these events truly were.

Simulate totality

Offering real-time rendering, this website is the perfect tool to preview the 2024 eclipse.



The cubic centimeter


Machholz’s marathon


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