David Kornreich, a Cornell-trained astronomer and longtime science educator, died Aug. 30 when the amphibious airplane he was piloting crashed near Ithaca. He was 52.

Explore the 25 largest man-made things too large to fully comprehend. From colossal dams to entire indoor cities, discover ...

What: A SETI Live conversation about a solar eruption that began to rise from the Sun but ultimately failed to escape. Guests ...

Stanisław Lem, author of the science fiction classic Solaris (1961), balked at Andrei Tarkovsky’s 1972 film adaptation after ...

We journey from Mount Fuji as seen from orbit to the bubbling surface of Betelgeuse, exploring the forces that shape planets, ...

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What's the atmosphere like up at One World Observatory–calm and reflective, or more high-energy and touristy? Floor 100, 101 and 102 of One World Trade center constitute the One World Observatory, ...