Over the weekend, NASA dispatched the world's biggest and most powerful telescope to space. Scientists say this "time machine" will help in decoding the past of our universe. Palki Sharma has more.

Gravitas: Space is getting a time machine to decode the secrets of universe

We've all wasted countless precious minutes of our lives tinkering with Google Earth. From trying to find our homes to checking how famous tourist destinations looked from space, we've done it all.

Google Earth to bring a 'time machine' to look into the past

time-machine

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