Bacteria

Protecting Mars From Earthly Contaminates

Now that water has been discovered on Mars, the next step is to ensure we don't contaminate the planet with Earthly microbes and bacteria.
This is an artist’s impression of a Kuiper Belt object (KBO), located on the outer rim of our solar system.

Next stop for the New Horizons Spacecraft: The Kuiper Belt

New Horizons, the NASA probe deployed to visit Pluto, has begun a new mission: visit the Kuiper belt, a region beyond the orbit of Neptune.
Credit: NASA/JPL/University of Arizona
Caption: Alfred McEwen

The Canals of Mars

We now know there's liquid water on Mars, according to NASA. But at the turn of the 20th century, we believed something else: that Mars had canals.
Black and white mapping of canals

The Extinct Civilization of Mars

Liquid water has been detected on Mars. We explore the history of the search, and the astronomer, Percival Lowell, who shook the public imagination.
Astronauts on the International Space Station are ready to sample their harvest of a crop of "Outredgeous" red romaine lettuce from the Veggie plant growth system that tests hardware for growing vegetables and other plants in space.
Credits: NASA

Gardening in Space

Zero-gravity gardening: why growing plants in space isn't the same as here on Earth.
Artist's concept of buckyballs and polycyclic aromatic hydrocarbons around an R Coronae Borealis star rich in hydrogen. Credit: MultiMedia Service (IAC)

What’s between the Stars? Buckyballs!

How buckyballs fit into the formation of new stars.
An Earth-like planet in the foreground and the sun in the background

Kepler Finds Truly Earth-like World

The Kepler telescope discovers a habitable planet.
Satellite orbiting Pluto

Pluto Gets a Close-Up

What the New Horizon voyage tells us about Pluto.
Europa, oneEuropa, one of the four Galilean moons orbiting Jupiter

NASA Sets Its Sites on Europa

NASA has decided on the nature and scope of a mission to Jupiter’s moon Europa, scheduled in the 2020s.
A crowd of blurry figures in cool blue light

What Would Alien Life on Other Planets Look Like?

Predictions on alien life on other planets.