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The light shining through an exoplanet’s atmosphere can give us a hint of whether the planet supports life. NASA, ESA, and G. Bacon (STScI)

Cloudy with a chance of life: how to find alien life on distant exoplanets

A hint of oxygen and a whiff of methane in a distant exoplanet's atmosphere may be the first evidence we discover of alien life.
Is this what we’re seeing around KIC 8462852 - a colossal megastructure built by alien intelligence? Probably not. The reality might be even more interesting. Kevin Gill/Flickr

Whatever the strangest star in the galaxy is, it’s sure to be amazing

There's a lot of speculation about a star behaving strangely in our galaxy. But even if it's not evidence of alien intelligence, it's sure to be an amazing discovery.
Looking for evidence of extraterrestrial intelligent life elsewhere in the universe. Flickr/Asbjorn Sorensen Poulsen

The search for ET has been going on for years: so what do we know so far?

Astronomers have been looking for signs of intelligent life elsewhere in the universe for centuries. But the search has so far found nothing. So what makes this latest hunt so different?
The 64-metre Parkes Radio telescope will be instrumental in the search for extraterrestrial intelligence. CSIRO/David McClenaghan

The hunt for ET will boost Australian astronomy

The Parkes radio telescope is part of the US$100 million search for life elsewhere in the universe, but the investment will also benefit other space research at The Dish.
The Kepler satellite discovers exoplanets by measuring the light drop from a star when a planet moves in front of it. Maths can uncover many more exoplanets. Australian National University and the Niels Bohr Institute

Alien worlds: most stars have planets in the habitable zone

The search for life on other planets gets a boost thanks to an old calculation that found Uranus in our solar system.
An artist’s impression of the oldest known system of terrestrial-sized planets, Kepler-444. Tiago Campante/Peter Devine, University of Birmingham

Ancient exoplanet discovery boosts chances of finding alien life

One of the crucial variables in calculating the likelihood that alien life exists elsewhere in our galaxy is the number of stars that possess planetary systems, and the proportion of those planets that…
Artist’s impression of the planet Kepler 62-f which could lie in the habitable zone of its host star 1,200 light-years from Earth in the constellation Lyra. NASA Ames/JPL-Caltech

The tools needed to seek out new worlds out there in space

More than 1,000 exoplanets have now been discovered by the Kepler Space Telescope, announced NASA this month, and the figure continues to climb. Three of the newly confirmed Kepler planets are thought…
Artist’s impression of an Earth-sized planet in the Kepler 186 system. But what makes one planet more habitable than another? NASA Ames/SETI Institute/JPL-Caltech

What makes one Earth-like planet more habitable than another?

When it comes to finding the right kind of planet to target in the search for life elsewhere in the universe, the size of the planet matters. All planets are believed to form by a process of competitive…
A reconstruction of the path and damage caused by the asteroid that exploded over Chelyabinsk, Russia, in February 15, 2013. Flickr/Sandia Labs

Impacts, extinctions and climate in the search for life elsewhere

Every so often our Earth encounters a large chunk of space debris which reminds us that our solar system still contains plenty of debris that could potentially have an impact on life on Earth. While the…
In the coming years, many planets that could host life will be discovered. But which will we target in the search for life elsewhere? IAU/L Calçada

Giant impacts, planet formation and the search for life elsewhere

In the search for life beyond our solar system, we need to consider the system in which a planet moves, including the other planets and assorted debris that accompany it on its journey through the cosmos…

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