If humans are to travel to distant destinations in space like the moon or Mars, they’ll need ways to live for long periods of time. And one of the key challenges of that includes how to have safe food and water to eat and drink when far from Earth.
Human spaceflight is dangerous, but worth the risk, according to Jan Wörner, the Director General of the European Space Agency (ESA). But even so, there are limits – like Mars. Robots, as proxies for human exploration, can take on dangerous missions by travelling to places astronauts are not yet capable of reaching, but they can never replace what we learn from putting women and men in space, according Wörner.
If you want to build or fix something in space, you might think you’d need a human to do it. But what if you didn’t? What if robotic spacecraft could be used to refuel satellites in orbit, add new instruments to outdated machinery and even build entire structures while in space?
We need to improve how we keep track of objects in space and predict where they will go in order to avoid collisions in Earth’s increasingly crowded orbit, according to Dimitra Stefoudi, a space law researcher from Leiden University in the Netherlands.
When a massive star reaches the end of its life, it can explode as a supernova. But there’s a unique type of supernova that’s much brighter that we’re just starting to understand – and which may prove useful in measuring the universe.
At 23.03 (local time) on Sunday 9 February, Europe’s newest mission to study the sun is set to lift off from Cape Canaveral in Florida, US. Called Solar Orbiter, this European Space Agency (ESA) mission will travel to within the orbit of planet Mercury to study the sun like never before, returning stunning new images of its surface.
Black holes in the early universe pose a bit of a problem. Based on observations from telescopes on Earth and in space, we know that some black holes grew to be a billion times the mass of the sun just one billion years after the Big Bang. Our current models of black hole growth, however, can’t explain this speed of growth. So how did these supermassive black holes come about?
It may be that life is lurking out there on other planets. But stuck here on Earth, how can we ever know for sure? A good place to start is by looking for the compounds on other worlds that are known to be the key ingredients of life as we know it.
The next-generation batteries could pack 5 times more energy, but there are problems.
Prof. Colin McInnes says international organisations are failing to stand together.
Metagenomics can help us spot emerging diseases such as coronavirus, says virologist Marion Koopmans.