Magazine

Exoplanets, Planets, Solar System

Why haven’t we sent a microphone to Mars, or any other planet for that matter?

Cosmology

What if there were two gravitational wave sources coming from different directions? Would there be an interference pattern?

Cosmology

How do we know how fast gravity waves travel?

Observing

Exploring Hercules

Solar System

Are impactors more prevalent in the outer solar system than they are in the inner solar system? Does this affect how surface ages are estimated?

Observing

Lounging in Lyra

Telescopes and Equipment

How does one determine magnification? I have an Edmund Scientific Astroscan, 4-1/8-inch aperture, F/4.2 reflecting telescope, used with a 2.5x Barlow lens and a 28mm Plossl eyepiece.

Telescopes and Equipment

I am struggling to find a system for telescopic observations of the planets and their major moons worthy of photographing. One wrinkle: I am in a wheelchair and almost blind.

Science

Pulsars and neutrinos

The Moon

The Nubium Whisker

Astrophotography

Stellar neighbors

Exoplanets, Observing, Planets, Solar System, The Moon

Mercury and Venus return