North America To Scale On Various Planets In Our Solar System

We’ve all seen images comparing the size of Earth with that of other planets in the solar system. The problem, John Brady of Astronomy Central realized, is that these images assume a grasp…

Why Some Giant Planets Don’t Appear To Have Water

The largest study ever conducted of the atmospheres of planets circling other stars has revealedhow different they can be and explained why some appear to contain so little water and…

Hubble Spies Blue Planet — It’s Not Earth

As far as planets go, HD 189733b — a giant, sizzling Jupiter-like world that swoops around its parent star every 2.2 days — couldn’t be more different from Earth. But…

NASA’s New Horizons Readies for This Summer’s Pluto Flyby

After traveling nearly five billion kilometers over nine years, NASA’s New Horizons spacecraft has just entered the first phase of approach in its upcoming epic encounter with Pluto. The series…

Robot Spacecraft Snaps Uranus Through Rings of Saturn

This NASA image depicts Uranus and its five moons. Image: NASA The robotic NASA spacecraft Cassini has been touring the solar system for 17 years now — and it just…

Life Could Be Possible On Sideways Exoplanet If It Has Oceans

Until now, researchers believed a factor in the habitability potential of an exoplanet involved its obliquity, or its axial tilt relative to the parent star. They thought that if a planet tilted mostly on…