To support alien life, a planet doesn’t have to be exactly like Earth, but it does need a few key ingredients. First, it should orbit its star at the right distance, where temperatures allow liquid water to exist.

But the real truth is that alien life on other planets could be even stranger than floating balloons or amorphous organisms floating in layers in water. Here on Earth, we have carbon-based life forms, but would they necessarily be elsewhere in the Universe?

Recent observations suggest that scientists have identified potential microbial fingerprints in the atmospheres of other planets, raising intriguing questions about the possibility of alien life existing in the clouds. These findings, coupled with studies ...

A new estimate of the number of habitable planets orbiting the most common type of stars in our galaxy could have huge consequences for the search for life. According to a recent study, tens of billions of planets around red dwarfs are likely capable of ...

Obama replied “They’re real, but I haven’t seen them, and they’re not being kept in … what is it …?” “Area 51?” the interviewer responded. Then Obama said, “Area 51. There’s no underground facility. Unless there’s this enormous conspiracy, and they hid it from the president of the United States.”

Add Yahoo as a preferred source to see more of our stories on Google. A composite view of Mars taken by the Viking I and II probes. NASA/USGS In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars.

In 1995, a pair of scientists discovered a planet outside our solar system orbiting a solar-type star. Since that finding—which won the scientists a portion of the 2019 Nobel Prize in Physics—researchers have discovered ... It seems that we are ...