Solar System

Our solar system consists of the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, as well as countless asteroids and comets, that are gravitationally bound to the Sun.

Science, Solar System

Massive, deep deposits of ice found on Mars

Science, Solar System

I saw a program that showed the Moon revolving around Earth, causing the oceans to swell on both sides of the planet. Shouldn’t the ocean opposite the Moon be shallower than the side facing it?

Science, Solar System

Did the solar system form in a bubble?

Science, Solar System

Arecibo’s restored radar captures new images of asteroid 3200 Phaethon

Robotic Spaceflight, Science, Solar System, Space Exploration

NASA’s New Frontiersmen

Science, Solar System

Titan’s too-cold poles explained

Science, Solar System

Astro News Bytes: Ceres’ Lost Ocean

Robotic Spaceflight, Science, Solar System, Space Exploration

Shadows and rain from Saturn’s rings alter the planet’s ionosphere

Science, Solar System

Why do meteoroids explode in the atmosphere?

Science, Solar System

Seeking rogue comets

Science, Solar System

Evidence for plate tectonics mounts on Europa

Science, Solar System

Organic molecules make up half of Comet 67P

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Popular Observing Topics

Credit: NASA Goddard Space Flight Center/Public Domain via Wikimedia Commons.

The Sun

Safely observing the Sun can be a fun and rewarding experience.

Credit: Ted Hauter.

The Moon

Our nearest celestial neighbor provides many great sights.

Planets

Targeting our solar system’s other worlds is well worth the effort.

Credit: Tony Hallas.

Deep-Sky Objects

Nebulae, star clusters, and galaxies are the night sky’s hidden gems.

Credit: Celestron.

Telescopes & Equipment

Explore the tools that can help you unlock the night sky.

Credit: Peter Michaud, Gemini Observatory.

Astrophotography

Capturing great celestial sights is both an art and a skill.

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