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Scientists say limiting temperature rise to 1.5C is crucial to avoid the most dangerous impacts of climate change - alth...
01/08/2023

Scientists say limiting temperature rise to 1.5C is crucial to avoid the most dangerous impacts of climate change - although these increase with every extra increment of warming.

The 1.5C warming limit was partly designed to avoid crossing so-called "tipping points".

These are thresholds beyond which changes could accelerate and become irreversible in different parts of the Earth's climate system, such as the collapse of the Greenland Ice Sheet.

But it's not clear precisely where these thresholds sit. Some may have already been crossed; some may be further away than first thought.

The telescope has other objectives, too, one of which is to show us the detail of how stars are created and how they spa...
26/07/2023

The telescope has other objectives, too, one of which is to show us the detail of how stars are created and how they spawn planets. And it's for this reason that Rho Ophiuchi is a fascinating target for the most powerful observatory in space.

"There's so much going on in this spectacular picture, as young stars splash vibrant colours across the clouds of gas and dust from which they're being born," commented Prof Mark McCaughrean, Esa's senior advisor for science & exploration.

It's exactly one year since the super observatory was handed over to astronomers to begin using.And to celebrate, the US...
20/07/2023

It's exactly one year since the super observatory was handed over to astronomers to begin using.

And to celebrate, the US space agency Nasa has just released a spectacular image of one of the most photographed parts of the sky.

It's the Rho Ophiuchi cloud complex, which is the nearest star-forming region in space to us, being just 400 light-years away.

In 2026, the recovery mission will be launched. The Americans will land an "ascent vehicle" (essentially a rocket) on Ma...
14/07/2023

In 2026, the recovery mission will be launched. The Americans will land an "ascent vehicle" (essentially a rocket) on Mars together with the European fetch rover. The latter will trundle off to find and gather up the canisters, delivering them back to the rocket.
Within roughly 150 days, the space agencies want the canisters lifted off Mars by the ascent vehicle. It will rendezvous with a European orbiter that will take charge of the samples and carry them to Earth. A descent capsule will bring down the precious cargo somewhere over the US.

Dr David Parker, the director of human spaceflight and robotics at the European Space Agency, agreed: "The Americans cal...
11/07/2023

Dr David Parker, the director of human spaceflight and robotics at the European Space Agency, agreed: "The Americans called their Mars rovers Spirit, Opportunity and Curiosity. We've tended in the past to name our missions after famous scientists.

"But, yes, perhaps this time we go with a name connected with the search for life - biology, genetics, DNA, whatever. Who knows? We just want a great name."

05/07/2023

A third Scottish satellite builder, Alba Orbital, is waiting to put an even smaller probe up there.

So far all of Scotland's satellites have had to be sent abroad to await launch a passengers on big rockets carrying big payloads. That wait can sometimes stretch years.

A launch site here would cut transport and insurance costs drastically. Good news for a Scottish space industry that already turns over £1bn a year.

Most are based on the Cubesat format, each about the size of an big bottle of supermarket cola. They can pack as much as...
30/06/2023

Most are based on the Cubesat format, each about the size of an big bottle of supermarket cola. They can pack as much as three litres of advanced electronics.

The UK's first Cubesat was built in Glasgow by the Clyde Space company. Then the US company Spire chose the city as their European base. Now there are more Glasgow built satellites in orbit than from any other city in Europe.

The concern is that this material is becoming so abundant it could pose a collision hazard to operational missions that ...
27/06/2023

The concern is that this material is becoming so abundant it could pose a collision hazard to operational missions that provide important services, such as telecommunications and environmental monitoring.

RemoveDebris was designed to test relatively simple - and therefore low-cost - methods of clean-up.

Other missions will try alternatives, including robotic arms that reach out and grab junk. But this kind of approach is very complex and therefore much more expensive to implement.

"In the Solar System we have no idea whether [icy moons] have life underneath the surface or not. And it's very, very di...
21/06/2023

"In the Solar System we have no idea whether [icy moons] have life underneath the surface or not. And it's very, very difficult even when we live next door to those objects to make any assessment of what's going on beneath the surface of the ice... Imagine doing that from light-years away," says Dr Kipping.

Despite the challenges, Prof Giovanna Tinetti, an exoplanet researcher at University College London, believes that it's best to keep an open mind.

This is good news for the budding time traveller, because it suggests there is nothing to stop us from swapping where we...
09/06/2023

This is good news for the budding time traveller, because it suggests there is nothing to stop us from swapping where we are now for some other place and time.

But, importantly, it also implies that the past, present and the future are already written, so that if we were to travel back in time, we wouldn't be able to alter it. To take an oft-quoted example, we shouldn't be able to kill someone's grandparent so that their descendant will cease to exist in the future.

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