To Find Alien Life, Expect the Unexpected
Highlights of a Library of Congress symposium on first contact with extraterrestrial life
More Signs That Europa Could Be Habitable
Researchers see plate tectonic activity on a distant moon.
New ISS Experiment Tests Organisms’ Survival Skills in Space
Biological samples will be exposed to the harsh environment outside the space station.
Alien Life May Thrive on an Exotic Kind of Carbon Dioxide
The familiar gas would have not-so-familiar properties on other planets.
Scientists Find Life in an Antarctic Lake
…a place not unlike Jupiter’s moon Europa
Life in a Lake of Oil
And that may have implications for Saturn’s moon Titan
What If We Do Find Extraterrestrial Life?
A public symposium in Washington D.C. will take up this provocative topic.
Plastic as a Sign of Civilization
We will know the extraterrestrials by their trash.
Glaciers on Mars, 3.5 Billion Years Ago
New evidence that the planet was once cold, wet—and perhaps habitable.
An Ocean---Perhaps---on Pluto’s Moon Charon
New Horizons may find another water world when it reaches its destination.
Would Life Be More Advanced on a World Twice as Old as Earth?
Meet Kapteyn b, the oldest known exoplanet in the habitable zone.
100 Million Planets in our Galaxy May Harbor Complex Life
One percent of all exoplanets may be suitable for complex organisms, according to a new estimate based on data rather than guesswork.
Exploring Mars—With Arrows
Penetrator probes may be the perfect way to prospect for life on other planets.
Confirming Life On Other Planets Will be Tough—From Earth
It may even be impossible.
Did Mercury Do a Hit-and-Run on Earth?
It’s only outrageous speculation, but it would explain a few things.
Cassini Finds a Sea Under the Ice of Enceladus
Gravity measurements show a body of water as big as Lake Superior on Saturn's tiny moon.
Organic Material on Mars—The Case Gets Stronger
Contamination from Earth now seems less likely at the <i>Curiosity</i> landing site.
A New Clue to the Origin of Life
To get biology you need enzymes, but where did enzymes come from?
A New Mineral, Never Seen on Earth, Points to Our Planet’s Watery Interior
A diamond discovered in Brazil yields even richer scientific treasure.
Mars One: Balancing Skepticism and Optimism
There are lots of “ifs” in a controversial plan to send people to Mars by 2025.
Page 13 of 14