Potential first traces of the universe's earliest stars

The very first stars likely formed when the universe was only 100 million years old, less than one percent its current age. These first stars—known as Population III—were so titanically massive that when they ended their ...

Attosecond measurement on electrons in water clusters

Virtually all vital chemical processes take place in aqueous solutions. In such processes, a decisive role is played by electrons that are exchanged between different atoms and molecules and thus, for instance, create or ...

Help NASA scientists find clouds on Mars

NASA scientists hope to solve a fundamental mystery about Mars' atmosphere, and you can help. They've organized a project called Cloudspotting on Mars that invites the public to identify Martian clouds using the citizen science ...

Scientists discover comet's hourglass-shaped dust trail

Researchers from Finland, Canada, and Russia have discovered an unusual, hourglass-shaped dust trail of the comet 17P/Holmes. The particles that formed the dust trail were released by the most powerful of the thus-far documented ...

Which parts of Mars are the safest from cosmic radiation?

In the coming decade, NASA and China plan to send the first crewed missions to Mars. This will consist of both agencies sending spacecraft in 2033, 2035, 2037, and every 26 months after that to coincide with Mars opposition ...

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