If an alien in the Alpha Centauri star system were craving pizza, it would take tens of thousands of years to deliver it ...
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Does physics really rule out interstellar travel?
Physics sets unforgiving limits on how fast anything can move, yet the same laws also leave surprising room for creative ways to cross the gulf between stars. The real question is not whether the ...
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Scientists baffled as mysterious interstellar object produces its own light... defying comet theory
The mysterious interstellar object hurtling through our solar system has just given scientists more evidence that it may be a craft from another part of the galaxy. According to Harvard astrophysicist ...
Light travels at a whopping 299,792 kilometers per second. It zips from Earth to the Moon in a heartbeat, clears the orbit of ...
Powered by laser light, this tiny sail lays the groundwork for future advances in lightsail technology and the potential for interstellar propulsion. Reading time 3 minutes A team of researchers at ...
The Milky Way's interstellar medium—that is, the dust and gas that threads between our galaxy's billions of stars—is an abundant yet elusive material. That means the latest image from NASA's James ...
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