Butterfly QQ 34

Butterfly QQ 34 Никогда не поздно стать тем, кем вы могли бы быть.

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.

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."

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 relevance here to Mars and the Perseverance rover is that Jezero Crater looks from satellite imagery to have held a ...
30/05/2023

The relevance here to Mars and the Perseverance rover is that Jezero Crater looks from satellite imagery to have held a large lake deep in its past. And at the edge of the crater are carbonate rocks that could represent the sediments laid down at the shoreline.

Might Jezero have had microbes growing stromatolites in the crater's calm, nutrient-rich, shallow waters?

The timeline would not be dissimilar to Earth, just a little earlier. Scientists think the lake existed about 3.7 billion years ago.

The researchers used a range of high-resolution analytical and imaging techniques to detail structures whose existence, ...
26/05/2023

The researchers used a range of high-resolution analytical and imaging techniques to detail structures whose existence, they argue, can only really be explained by life's activity, as opposed to something that might result naturally in the environment.

One large-scale feature is the undulating top surface of the stromatolites, which arises as photosynthetic microbes grow towards the light. The undulations emerge because biology doesn't grow at the same rate in the same way in three dimensions.

22/05/2023

Two big engine firings from Orion's European Space Agency-provided propulsion unit - the first occurring last Thursday, and the second in the past few hours - have since turned the ship for home.

Nasa is describing the return as its "priority one" for the mission. Engineers want to see proof that the vehicle can survive the heat of re-entry into Earth's atmosphere.

These worlds may be in the cold, outer reaches of the Solar System, far from the Sun, but they could just be able to sat...
16/05/2023

These worlds may be in the cold, outer reaches of the Solar System, far from the Sun, but they could just be able to satisfy the four inputs - even for a supply of energy. It's not light and warmth from a star, but the constant gravitational squeezing and pushing the giant planets exert on the moons.

It's this flexure that provides the means to keep water in liquid form and could also drive the kind of volcanic vent systems on ocean floors that Prof Mundell mentions and which some scientists think could have been the origin of life on Earth.

Venus is a hothouse world, with a surface temperature of 500C - hot enough to melt lead. But it's not just the heat that...
11/05/2023

Venus is a hothouse world, with a surface temperature of 500C - hot enough to melt lead. But it's not just the heat that makes it inhospitable: the planet's thick atmosphere has cranked the surface pressure up to 90 bars. That's the equivalent to what you'd experience 900m below the sea.

But Venus and Earth started out being much more similar. "They probably started out as twins, but they've diverged," said Dr Richard Ghail, from Royal Holloway, University of London, who is the principal investigator on EnVision.

Dr Françoise Roques, from the observatory, who is on the scientific board of the encyclopedia, told BBC News: "The great...
05/05/2023

Dr Françoise Roques, from the observatory, who is on the scientific board of the encyclopedia, told BBC News: "The great news is that we shift from a starry sky to a planetary sky, as there are more planets than stars.

"And also that the planetary systems have great diversity of structure, with planets orbiting zero, one, two... stars, or other planets."

The Nasa Exoplanet Archive is 74 planets away from the milestone. But there are 443 planet candidates detected by Nasa's Tess space telescope (launched in 2018) awaiting confirmation.

And this Trace Gas Orbiter, as it's called, is capable of seeing methane at fantastically low levels.Even when the conce...
03/05/2023

And this Trace Gas Orbiter, as it's called, is capable of seeing methane at fantastically low levels.

Even when the concentration is only a few tens of molecules in every trillion molecules of Martian air, the TGO should still to be able to identify the presence of CH4, if it's there.

The fact that the satellite couldn't when probing the atmosphere in April to August last year raises some difficult questions and some fascinating possibilities.

In the past, Inmarsat has tended to purchase a set of big spacecraft on a generational basis every seven years or so. Th...
28/04/2023

In the past, Inmarsat has tended to purchase a set of big spacecraft on a generational basis every seven years or so. The flexible nature of the new "production scale" OneSats means more frequent, smaller orders will likely be made, to take advantage of the latest technological developments that keep the network as a whole as modern as it can be.

"These new satellites individually are much lower cost than our previous satellites," said Inmarsat CEO Rupert Pearce.

The so-called Seyfert flare started near the supermassive black hole in the centre of the galaxy, they add.The impact wa...
26/04/2023

The so-called Seyfert flare started near the supermassive black hole in the centre of the galaxy, they add.

The impact was felt 200,000 light-years away.

The discovery that the Milky Way's centre was more dynamic than previously thought can lead to a complete reinterpretation of its evolution.

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