Magazine | Page 100 of 282 | Astronomy.com

Exoplanets, Planets, Solar System

Astronomers once thought Pluto’s atmosphere would condense down to the surface as it moved away from the Sun. Can that still be true, and if so, is that causing the surface features we now see?

The Sun shines through portals at ancient monuments on certain days of the year. Given that Earth precesses on its axis every 26,000 years, wouldn’t that cause all those alignments to be off?

The constellation Leo the Lion hosts Regulus and Denebola. Credit: Bill and Sally Fletcher.

Are we there yet?

We are made up of elements forged in stars. But with the vast distances between stars, are we the product of only one star or many?

Where are the stars?

A year on Mars takes 687 Earth days.

Exoplanets, Observing, Planets, Solar System, The Moon

Red Planet delights

Astrophotography

Data and doughnuts

Layer upon layer

Telescopes and Equipment

When amateur astronomers grow old and wish to donate their telescope and observatory to their local club, who assesses the value?

Listen to the stars

Cosmology, Solar System

Martin Rees: Origin and fate of the universe

Michael Rampino: How long will life last on Earth?