First flowers in space bloom on space station

The first flower grown in space has bloomed. NASA Astronaut Scott Kelly, International Space Station gardener, shared photos of the prized zinnias this weekend.

Why life on Earth first got big

Some of the earliest complex organisms on Earth—possibly some of the earliest animals to exist—got big not to compete for food, but to spread their offspring as far as possible.

No signs (yet) of life on Venus

The unusual behavior of sulfur in Venus' atmosphere cannot be explained by an "aerial" form of extra-terrestrial life, according to a new study.

Finding the source of the impactor that wiped out the dinosaurs

The impactor believed to have wiped out the dinosaurs and other life forms on Earth some 66 million years ago likely came from the outer half of the main asteroid belt, a region previously thought to produce few impactors. ...

Europe okays project to seek alien life

Europe has approved the launch of a deep-space observatory to sniff out habitable planets in other star systems, along with any life forms they may host.

Was life on the early Earth purple?

Early life forms on Earth may have been able to generate metabolic energy from sunlight using a purple-pigmented molecule called retinal that possibly predates the evolution of chlorophyll and photosynthesis. If retinal has ...

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