The sooner-than-expected discovery of gravitational waves, announced in February, has given a new impetus to scientists in the field, who are now working to make sense of what it means not only for their research but also for our understanding of Einstein’s theory of general relativity.
At the extremes of mass, energy, gravity and space-time – black holes still present a mystery for scientists, yet the key to finding a way forward is reconciling gravity, described by Albert Einstein’s general relativity, and the behaviour of subatomic particles modelled using so-called quantum theory.
Sending astronauts to Mars poses several large challenges, among them a long journey filled with life-threatening radiation from cosmic ray exposure and solar flares. Not to mention the fact that we haven’t yet worked out how to get them back again.
There could have been life under the surface of Mars, according to Prof. Jan Woerner, Director General of the European Space Agency (ESA), which in March is launching its ExoMars mission to find out.
Gravitational waves have been detected on earth for the first time, researchers at the Laser Interferometer Gravitational-wave Observatory (LIGO) in the US and the VIRGO detector in Italy have announced.
Despite Matt Damon’s heroics in The Martian, where he overcomes the odds to survive after being left behind during a mission to the Red Planet, EU-funded researchers reveal that we don’t have the technology yet to get there alive and survive.
New observations may provide alternative explanations for dark energy.
The technology could work with existing infrastructures, says Prof. Lee Cronin
We need to double-check the evidence on dark energy, as it may not exist at all, says Prof. Subir Sarkar.