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Yes, you can look into the past. All you have to do is stare at the sky

With the aid of a telescope you can see millions or even billions of years into the past with your very own eyes

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Our senses are stuck in the past. There’s a flash of lightning, and then seconds pass until we hear the rumble of distant thunder. We hear the past. We are seeing into the past too. While sound travels about a kilometre every three seconds, light travels 300,000 kilometres every second. When we see a flash of lighting three kilometres away, we are seeing something that happened a hundredth of a millisecond ago. That’s not exactly the distant past. But as we look further afield, we can peer further back. We can see seconds, minutes, hours and years into the ...