Seeing Earth as an exoplanet: What signs of life are visible?
An extraterrestrial spacecraft lurking in a satellite's orbit near Earth would be able to see city lights and pollution in our atmosphere. But what if it searched for signs of life on Earth from afar?
Cosmic impacts may help create suitable habitat for life
Cosmic impacts are known to trigger mass extinctions on Earth. However, a new study adds to evidence that asteroid and cometary bombardment can also shelter life by generating pores in rocks that shelter ...
Don't forget F-type stars in search for life, scientists say
Scientists searching for habitable planets beyond Earth shouldn't overlook F-type stars in favor of their more abundant, smaller and cooler cousins, according to new research from University of Texas at Arlington ...
Could alien life cope with a hotter, brighter star?
The stars in the night sky shine in myriad hues and brightnesses—piercing blues, clean whites, smoldering crimsons. Every star has a different mass, the basic characteristic that determines its size, lifespan, ...
Alien moons could bake dry from young gas giants' hot glow
When we think of where else life might exist in the universe, we tend to focus on planets. But on a grander cosmic scale, moons could prove the more common life-friendly abode.
Could dying planets harbor life?
If life does exist anywhere else in the universe, it may only be fleeting. Now scientists are researching how signs of life might look on dying planets.
Cyborg Astrobiologist uses phone-cam to search for signs of life
A novel, hybrid part-human, part-machine visual system that uses a simple mobile phone camera has been developed to search for evidence of past or present life in planetary analogue sites on Earth. Patrick ...
Gale before Curiosity: What we knew and what the rover may reveal
The first comprehensive analysis of what we knew about the Gale crater on Mars before the recent landing of space rover Curiosity has been published by the International Journal of Astrobiology (IJA).