Perplexity AI, led by Aravind Srinivas, has surpassed ChatGPT to become the top free app on Apple's App Store, fueled by a ...

Suppose the galaxy’s oldest secrets were readable not in the glare of faraway stars, but in a brief, cold visitor whizzing ...

Astronomers continue to track Comet 3I/ATLAS, the third-ever discovered interstellar object, passing through our solar system ...

The Gemini North telescope in Hawaii recently snapped a close-up of the comet that's captured the world’s attention.