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A study based on tree rings claimed that droughts played a role in events that led to the Roman withdrawal from Britain, but other researchers say that isn't backed up by historical evidence

Scientists are designing techniques to smash up space rocks that could be headed our way

Humans are the only species that has chins. A recent study sheds light on how that came to be and why evolution doesn’t always follow the rules

A collection of stories set in George R. R. Martin’s Wild Cards universe and a novel from The Expanse author James S. A. Corey are among the science-fiction books we’re looking forward to this month

A collection of stories set in George R. R. Martin’s Wild Cards universe and a novel from The Expanse author James S. A. Corey are among the science-fiction books we’re looking forward to this month

Géraldine Naja took up duty as Director of Space Transportation (D/STS) at the European Space Agency on 1 April 2026. She will continue to serve as head of her former directorate, now called the Commercialisation and Industry Partnership directorate (D/CIP), as acting director.

Christine Klein took up duty as acting Director of Controlling, Finance and Operational Procurement (D/CFO) at the European Space Agency on 1 April 2026. She will lead the newly established directorate during its consolidation.

The planet Mercury is the closest planet to the Sun, and also the most difficult for spacecraft to visit and explore. This is because as spacecraft get closer to Mercury, the Sun’s enormous gravity pulls in the spacecraft, greatly increasing its speed and making it hard to slow down without large amounts of fuel. But what if a spacecraft could both travel to and explore Mercury without fuel? This could drastically reduce mission costs while delivering impactful science.

Earth Observatory

1. Science
2. Earth Observatory
3. March of the Harmattan

• Earth
• Earth Observatory
• Image of the Day
• EO Explorer
• Topics
• More Content
• About

Earth Observatory

1. Science
2. Earth Observatory
3. March of the Harmattan

• Earth
• Earth Observatory
• Image of the Day
• EO Explorer
• Topics
• More Content
• About

The planet Venus is often called “Earth’s twin” due to the similar sizes, but the reality couldn’t be farther from the truth. Unlike Earth, which is hospitable to an estimated billions of lifeforms, Venus is not hospitable to life as we know it, at least on its surface. This is because the surface of Venus not only experiences an average temperature of 464 degrees Celsius (867 degrees Fahrenheit), but it also has crushing pressures approximately 92 times of Earth, or equivalent to approximately 1 kilometer (3,000 feet) below the ocean. These extreme surface conditions are why the longest spacecraft to survive on the Venusian surface is just over two hours.

Ordinary telecoms grade optical fiber could help planetary scientists better characterize the moon’s deep interior as well as its lava tubes, say two new journal papers.

In the words of today's astrophotographer, Rositsa Dimitrova, "What have these silent sentinels watched

These guidelines reinforce the importance of whole grains and fruit and vegetables but clash with the government’s latest nutrition advice on red meat

The Universe expanded rapidly soon after the Big Bang, and we aren't sure why. But a theory of quadratic quantum gravity might be the answer.

Simpson’s paradox demonstrates how counterintuitive statistics can be

Charles H. Bennett and Gilles Brassard, winners of the latest Turing Award, spent their lives touting the advantages of the quantum world

A major solar storm during the Artemis II mission could harm astronauts. Here’s how NASA is protecting them

All eyes are on the inner solar system in April 2026, as two comets reach perihelion. One, Comet R3 Pan-STARRS we’ve known about since last year. Another, sungrazer A1 MAPS was just found as the first comet of 2026 and presents us with a big question: will it survive its blistering perihelion passage on Saturday, April 4th, or simply vaporize like the majority of sungrazers before it?

The first launch opportunity for Artemis II, the first mission to bring astronauts towards the Moon in over 50 years, is set for 1 April at 18:24 local time (2 April at 00:24 CEST). Tune in from one hour before launch at 22:24 BST / 23:24 CEST on ESA Web TV to watch the launch.