Magazine

Observing

Love affair with a saros

Science

Entropy redux

Observing

A fishy tale in the fall sky

Observing, Planets

Venus meets Jupiter

Science

Gamma radiation from space has very high energy levels. What is the theoretical limit on the energies of gamma-ray photons? Is there a current technology to detect and measure the highest energy level?

Astrophotography

Kepler near the terminator

Science

Are there 3-D renderings of the Small and Large Magellanic Clouds available to view?

Exotic Objects, Science

Your October 2016 article on black holes describes a singularity with infinite density. It has been my understanding that anything with infinite density also has infinite mass and infinite gravitational attraction. Wouldn’t anything with infinite attraction collapse the universe?

Observing

Sparkling star clusters

Observing

Priceless royalty

Science

Five Questions With David J. Eicher: Episode 11 – Heidi Hammel

Science

Five Questions With David J. Eicher: Episode 10 – Sara Seager