This is the second posting in my 2019 time capsule series, where I consider how the questions of the present will be viewed in 10 years time or afterwards. Today, I’m going to focus on space, and some of the big questions that may well have convincing answers within the next decade.
We look into the skies and we try to understand why the universe acts as it does. Unfortunately some of our biggest questions don’t have good answers. We resort to placeholders such as “dark matter” and “dark energy” to explain why galaxies spin the way they do, why the universe seems to be expanding at an accelerating rate, and other conundrums that make little sense to us with our conventional models of the world. With the switching on of the Large Hadron Collider, it it possible that answers may be found and that our understanding of the world will need to be rewritten within the next 10 to 20 years. What progress will we have made by 2019?
The Earth is the only place we know of that contains life. Our planet is saturated with living organisms: from the deepest undersea valleys to the highest mountaintops; the rims of the hottest volcanoes to the frozen wastes of Antarctica. Life came into being only a few hundred million years after the Earth itself formed and somehow managed to survive the hellishness of our world’s early existence. Life is pretty rugged. And yet, we know of no other place: no planet, no moon, no comet or asteroid, where life is present. But there are hints. Methane, water and microfossils on Mars, ice volcanos on Europa and Enceladus. Who knows what we may find? Probes are being developed as we speak. Will we discover, as some think, that life is not just confined to one small planet, but is virtually everywhere?