European Space Agency
Every Cosmic Herald story on European Space Agency — missions, launches, discoveries, and the business of space, newest first.
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Missions
ESA's Hera Mission Is About to Rewrite What We Know About Asteroid Deflection
NASA's DART proved we can move an asteroid. Now ESA's Hera spacecraft is arriving at Didymos to find out exactly what happened — and whether planetary defense is ready for a real threat.
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Missions
NASA's DAVINCI mission will drop a probe through Venus's atmosphere. Here's what it's looking for.
DAVINCI is a spherical probe designed to fall through Venus's corrosive atmosphere for about an hour, sampling the air at every altitude. It's looking for evidence that Venus once had oceans — and why it lost them.
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NASA & Agencies
India's space program is moving faster than anyone expected. Here's where it stands.
ISRO's Chandrayaan-3 south pole landing in 2023 and Aditya-L1 solar observatory marked a turning point. With Gaganyaan crewed flights approaching and a Venus mission on the books, India is building the infrastructure of a major spacefaring nation.
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Commercial
Low Earth orbit has a garbage problem. Here's who's trying to clean it up.
There are roughly 27,000 tracked pieces of debris in orbit, and hundreds of thousands more too small to track. Two companies — Astroscale and ClearSpace — are building the first commercial debris removal spacecraft. The engineering is harder than it sounds.
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Missions
BepiColombo is about to become the first new Mercury orbiter in 50 years
ESA and JAXA's joint BepiColombo mission spent six years threading through the inner solar system. Its arrival at Mercury orbit will answer questions about the planet's magnetic field and mysterious dark surface that MESSENGER couldn't fully resolve.
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Science & Discovery
Gravity as a telescope: how Einstein rings are mapping dark matter
Gravitational lensing bends light from distant galaxies around massive foreground objects, creating arcs and Einstein rings. Astronomers have turned this relativistic quirk into a precision instrument for weighing dark matter — and the results are reshaping cosmological models.
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NASA & Agencies
Russia in space, 2026: what's left of the program after four years of isolation
Roscosmos has shed international partners, lost Soyuz commercial launch contracts, and watched its GLONASS constellation degrade. What remains is a human spaceflight program, a military reconnaissance constellation, and ambitious plans whose funding remains unclear.
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NASA & Agencies
ESA is building a telescope just for exoplanet atmospheres. Ariel will change what we know.
The European Space Agency's Ariel mission — the Atmospheric Remote-sensing Infrared Exoplanet Large-survey — is designed to systematically characterize the atmospheres of hundreds of exoplanets in a single mission. It's the first telescope built specifically to answer the question: what are other planets made of?
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Astronomy
Astronomers can't agree on how old the universe is. That's actually exciting.
Two different methods of measuring the expansion rate of the universe give two different answers — and the gap between them is too large to be a measurement error. Known as the Hubble tension, this disagreement might be pointing toward new physics that nobody has found yet.
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Missions
ESA's JUICE mission is on its way to Jupiter. The science starts long before arrival.
The Jupiter Icy Moons Explorer — JUICE — is now on a seven-year trajectory to the Jovian system. Its mission is ambitious: orbit Jupiter, make close flybys of Callisto and Europa, then slip into orbit around Ganymede, the first spacecraft ever to orbit a moon other than our own.
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Science & Discovery
Phosphine on Venus: four years later, what the research actually says
The 2020 claim that phosphine — a potential biosignature gas — had been detected in Venus's atmosphere sparked one of the most contentious debates in recent planetary science. Years of follow-up observations and analysis have clarified the picture, though not fully resolved it.
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Science & Discovery
The Sun is at its most active in two decades. What solar maximum actually means.
Solar Cycle 25 has been more active than forecasters predicted, delivering some of the strongest geomagnetic storms in years and producing aurora visible at unusually low latitudes. What solar maximum means for technology, satellites, and power grids — and how we prepare — is more relevant now than it has been in a generation.
