NASA
Every Cosmic Herald story on NASA — missions, launches, discoveries, and the business of space, newest first.
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Science & Discovery
After 11 years reading the Martian air, MAVEN goes quiet
NASA has ended its MAVEN mission after more than a decade studying how Mars lost its atmosphere. The orbiter rewrote our understanding of why a once-wet world dried out — and found auroras nobody expected.
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Science & Discovery
The little moon that sprays its ocean into space — and why it tops the list for life
Enceladus is a frozen moon of Saturn barely 500 kilometres across, but it does something no other world is known to do: it jets plumes of its hidden ocean directly into space, where a spacecraft can taste them. What's in those plumes has made it a prime target in the search for life.
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Science & Discovery
Two 1970s spacecraft are still calling home from interstellar space — but the lights are going out
Nearly half a century after launch, both Voyager probes are flying through interstellar space, the only human-made objects to leave the Sun's bubble. Their power is fading, and engineers are switching off instruments one by one to keep the faint signal alive a few years longer.
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Science & Discovery
The spacecraft that flies into the Sun's atmosphere — and keeps coming back
Parker Solar Probe has now made its closest approaches to the Sun more than two dozen times, screaming through the corona at 430,000 miles per hour. It is the fastest object humans have ever built, and it is rewriting what we know about our star.
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Science & Discovery
Curiosity found the richest haul of organic molecules yet on Mars — and a careful reason not to call it life
A rock the rover drilled in 2020 has yielded the most diverse set of carbon-bearing molecules ever detected on Mars, preserved for billions of years in clay that once held water. It's a tantalizing result — and a case study in scientific restraint.
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Science & Discovery
Saturn now has 285 moons — and the count keeps climbing
A 2026 batch of discoveries pushed Saturn's moon tally to 285 and Jupiter's to 101. The new satellites are tiny, faint, and a sign that a new generation of survey telescopes is just getting started.
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Science & Discovery
The Hubble tension: a 5-sigma crack in the standard model
Two rigorous ways of measuring how fast the universe expands disagree by about 9%, at better than five sigma. A decade of scrutiny — most recently with JWST — has failed to dissolve it, and the discrepancy may be pointing at physics beyond the standard cosmological model.
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Science & Discovery
From one solar system to six thousand worlds
Thirty years after the first planet was found around a Sun-like star, NASA's confirmed exoplanet count has passed 6,000 — almost none of them ever directly imaged. The methods that found them now drive a far harder pursuit: reading their atmospheres for signs of life.
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Science & Discovery
A nearby dwarf galaxy is a blueprint for the universe's first dust
Webb found unexpected dust-making in Sextans A, a chemically primitive dwarf galaxy — evidence that the earliest galaxies could forge solid grains by pathways unlike those that dominate today.
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Science & Discovery
Saturn's wandering spin was never real — Webb found the culprit
For decades Saturn appeared to change its rotation rate, which should be impossible. Using Webb, researchers showed the 'change' was aurora-driven winds distorting the measurement — a planetary heat pump feeding itself.
