Solar System
Where Did Venus's Water Go?
It should not be surprising that Venus is dry. It is famous for its hellish conditions, with dense sulphurous clouds,…
New Evidence for Our Solar System’s Ghost: Planet Nine
Does another undetected planet languish in our Solar System's distant reaches? Does it follow a distant orbit around the Sun…
The Giant Planets Migrated Between 60-100 Million Years After the Solar System Formed
Untangling what happened in our Solar System tens or hundreds of millions of years ago is challenging. Millions of objects…
Ice Deposits on Ceres Might Only Be a Few Thousand Years Old
The dwarf planet Ceres has some permanently dark craters that hold ice. Astronomers thought the ice was ancient when they…
NASA’s Next Solar Sail is About to Go to Space
Everyone knows that solar energy is free and almost limitless here on Earth. The same is true for spacecraft operating…
Want to Leave the Solar System? Here’s a Route to Take
The edge of the Solar System is defined by the heliosphere and its heliopause. The heliopause marks the region where…
Cosmochemistry: Why study it? What can it teach us about finding life beyond Earth?
Universe Today has had some fantastic discussions with researchers on the importance of studying impact craters, planetary surfaces, exoplanets, astrobiology,…
An Asteroid Found Sharing the Orbit of Mars
Astronomers discovered another asteroid sharing Mars' orbit. These types of asteroids are called trojans, and they orbit in two clumps,…
Citizen Scientists Find Fifteen “Active Asteroids”
Nature often defies our simple explanations. Take comets and asteroids, for example. Comets are icy and have tails; asteroids are…
Perseverance Sees Phobos, Deimos and Mercury Passing in Front of the Sun
NASA's Perseverance rover is busy exploring the Martian surface and collecting samples for eventual return to Earth. But the rover…