Monthly focus

The moon

05 February 2019

Astronauts on the International Space Station are treated to stunning views, including a crescent moon hanging above the gaseous layers of Earth’s atmosphere. Image credit - NASA's Earth Observatory, licensed under CC BY 2.0

Fifty years after humans first set foot on the moon, Earth’s only permanent natural satellite is back in the news with China’s successful landing on the moon’s as-yet-unexplored far side. This month, Horizon looks at how Europe is contributing to moon research. We hear from the European Space Agency’s director of human and robotic exploration about their plans to send a robot and then humans to the lunar surface in the 2020s, and speak to the scientists trying to fill the holes in our understanding of how the moon was formed. We also hear how we could solve the puzzle of where water on Earth originated by analysing volatile substances from the moon, and take a look at the methods and facilities being developed to protect precious extra-terrestrial samples from human contamination.

The moon's lack of tectonic activity preserves its oldest rocks. Image Credit - ANDY SMITH ASTRONOMY

space | frontier research

25 February 2019

How scientists are piecing together the history of the moon

In the solar system’s early days, a first Earth is thought to have been pulverised by a planet that scientists call Theia. We don’t know what it was made of or where it came from, only that it may have been the size of Mars. The powerful collision destroyed both planets so completely that scientists can only guess what they were like.

New findings suggest that if the moon formed after a giant impact after water had had been received, it should have gotten a share of that water. The question is - where did it go? Image Credit - ANDY SMITH ASTRONOMY

space | frontier research

19 February 2019

The moon’s water: where did it come from – and where did it all go?

Fragments of moon rock brought back from the lunar surface by astronauts on the Apollo space missions are providing new insights about where our planet’s life-giving water came from.

The LUVMI rover will be sent to the moon to inspect its water ice, and chemicals in its crust and atmosphere. Image credit - LUVMI consortium

space

12 February 2019

How to keep lunar samples safe

A lunar rover that can analyse samples in situ and a Europe-wide facility to store extraterrestrial samples will help to protect moon samples from contamination and increase their usability in scientific experiments.

Dr David Parker, the director of human and robotic exploration at ESA, says that the lunar campaign’s ultimate mission would be to see if a permanent human moon base can be established. Image credit - ESA

interview | space

05 February 2019

‘The moon is a history museum and we’ve only visited the gift shop’

Humans have not set foot on the moon since 1972, when the last Apollo mission came back to Earth. That could all change in the coming years, however, as entities like the European Space Agency (ESA) are preparing not just to return, but to build a permanent base on the surface.

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Exoplanets

On December 17th, the European Space Agency’s CHEOPS telescope will blast into space to take a closer look at some of the potentially habitable planets we’ve found beyond our solar system. Ahead of its launch, Horizon takes an in-depth look at what we already know about such exoplanets and what’s still to learn. We speak to Dr Michaël Gillon, who in 2017 was instrumental in discovering a system of seven Earth-like planets outside our solar system, about the diversity of the thousands of exoplanets we’ve found so far and next steps for research. We talk to scientists who are trying to understand the structure of Super-Earths – planets up to 10 times the size of Earth – by recreating elements of planetary cores in their labs, and others who are trying to understand how different planetary systems formed in the first place. Finally, we delve into one of the most important conditions for life to exist on exoplanets – their atmospheres – and find out how scientists are trying detect the biosignature gases that indicate the presence of life.

Methicillin-Resistant Staphylococcus aureus (MRSA). Image credit - NIAID, licensed under CC BY 2.0

Antibiotic resistance

All over the world, bacteria are becoming resistant to antibiotics, making infections more difficult – and in some cases impossible – to treat. It’s one of today’s biggest public health challenges and this month Horizon examines how scientists are working to overcome this growing issue. We speak to microbiologist Dr Nassos Typas about how we got here, what causes resistance to antibiotics and the different approaches being explored to combat resistance. We look at renewed efforts to find new antibiotics and ask whether it’s possible to reverse antibiotic resistance. And with dairy being a huge food source and also an antibiotic-intensive industry, we speak to scientists who are developing alternative therapies for treating cows for mastitis as a way of curbing antibiotics from coursing through our food chain.

In the early Bronze Age, there was an infusion of a different genetic makeup in Europe whose origin ancient DNA experts are trying to explain. Image credit - geograph/David Dixon, licensed under CC BY-SA 2.0

How did the plague reshape Bronze Age Europe?

Europe changed dramatically during the Bronze Age, with huge population shifts generally ascribed to the rise of new metal technologies, trading and climate change. But scientists believe that there may have been another reason for this social upheaval – the plague, possibly transported by, or on the back of, newly domesticated horses.

Basic research into hypoxia is helping to find mechanisms that would starve cancer of the oxygen it needs to grow. Image credit - Nephron, licensed under CC BY-SA 3.0

Nobel prize winner: Oxygen regulation discoveries are starting to lead to new anaemia, cancer drugs

Drugs that activate or block the body’s oxygen-sensing machinery to treat conditions such as anaemia in patients with chronic kidney disease and cancer are being made possible because we now understand the way that cells respond to oxygen deprivation, according to Sir Peter Ratcliffe, one of three winners of this year’s Nobel prize in physiology or medicine.

The moon

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How scientists are piecing together the history of the moon