Solar System
10 Interesting Facts about Io
Of Jupiter’s Galilean moons, Io is the closest to the planet at an average distance of 422,000 km (262,219 miles), and is the moon with the highest density. It is also the solar system object …
Solar System
Solar System
10 Interesting Facts about Europa
Europa is the smallest of Jupiter’s Galilean moons, and while it is only slightly smaller than our own Moon, it is nevertheless the 15th biggest object in the solar system, and more massive than all …
Solar System
10 Interesting Facts about Callisto
Callisto is Jupiter’s second-biggest moon, and the third-biggest moon in the solar system, after another one of Jupiter’s moons, Ganymede, and then Titan, the largest moon of the planet Saturn. As with Jupiter’s main moons …
Solar System
10 Interesting Facts about Ganymede
Ganymede is the biggest satellite in the solar system, and also the biggest object in the solar system that does not have a substantial atmosphere. Discovered by Galileo in January of the year 1610 along …
Astronomy Lists
Top Theories on How the Moon Formed
The Moon has been a constant source of wonder and fascination throughout mankind’s’ history, but despite being located a mere 238,900 miles or 1.28 light-seconds away, we know less about it and how it came …
Astronomy Lists
10 Fun Facts About Venus
Venus may appear as a brilliant, peaceful point of light in Earth’s sky, but beneath its reflective clouds lies a world of crushing pressure, extreme heat and unusual geology. From an atmosphere that races around …
Astronomy Lists
The Surface of Mars: 10 Major Features and Landforms
From Earth, Mars appears as a small red point of light. Seen close up, however, its rocky, dust-covered surface contains some of the largest and most dramatic landforms in the solar system. Enormous volcanoes, canyon …
Astronomy Lists
Top 10 Features on the Moon for Stargazers
Look at the Moon through binoculars or a telescope and you’ll find much more than craters. Its surface is covered with vast dark plains, rugged highlands, mountains, impact basins, valleys, rilles and bright rays of …
Astronomy History
Who Discovered the Sun is a Star?
In ancient Greece, early scientists such as Thales of Miletus (624-546 BC) first started to suspect that the Sun was not the deity Helios (Apollo) driving his chariot around the Earth, but was instead merely …
News
New Objects Discovered on Outskirts of Solar System
Astronomers studying the outer reaches of our solar system have discovered some new objects recently, and their behavior raises questions about just what’s at play in our solar system. Meet L91 One of the major …