Edwin Hubble’s work on galaxies is legendary. In 1923 the astronomer, working at Mount Wilson Observatory in California, proved that M31, the “spiral nebula” in Andromeda, was another galaxy. In one ...

This is my final Observing Basics column. Since I’m not one to do things in a small way, I’ve decided to hold this press conference to answer any questions you may have about my 20-year stint here.

We all have egos, whether we choose to acknowledge it or not. And we assess and judge people we feel have more inflated egos than others. The “ego” is the part of the human personality that defines ...

We all have egos, whether we choose to acknowledge it or not. And we assess and judge people we feel have more inflated egos than others. The “ego” is the part of the human personality that defines ...

NASA’s Earth Observing System provides nearly 30 years of continuous, high-quality measurements of Earth’s land, oceans, atmosphere, and ice, supporting climate research and long-term environmental ...