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Science & Discovery
The Wow! Signal is 47 years old. We still don't know what it was.
On August 15, 1977, a radio telescope at Ohio State University detected something that fit every expected signature of a signal from extraterrestrial intelligence. It was never detected again. Decades of follow-up have generated hypotheses but no consensus. Here is where that investigation stands.
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Missions
Artemis II keeps slipping. Here's what's actually holding it back.
NASA's crewed lunar flyby mission has been delayed again. The reasons are technical, financial, and organizational — and understanding them reveals how difficult it is to run a government human spaceflight program in 2026.
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Science & Discovery
How black holes actually grow: new X-ray observations are filling in the picture
Black holes grow by consuming nearby gas and dust — but the details of how that accretion works, and how it produces the relativistic jets that extend for millions of light-years, are still being worked out. A new generation of X-ray telescopes is catching the process in action.
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Missions
Dragonfly is going to Titan. Here's why that's one of the boldest planetary missions ever designed.
NASA's Dragonfly mission will send a nuclear-powered rotorcraft to fly across the surface of Saturn's moon Titan — a world with lakes of liquid methane, organic chemistry everywhere, and possibly the ingredients for life. The mission is years away, but it's being built now.
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Stargazing
The best meteor showers of 2026: when to watch and where to look
Each year brings the same celestial calendar of debris trails — but the conditions change. Moon phase, radiant altitude, and predicted rates vary year to year, and 2026 has some genuinely favorable nights worth planning around.
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Stargazing
Saturn's rings are nearly edge-on. Here's why that's worth watching.
Saturn's rings appear to open and close as the planet orbits the Sun, presenting a full face every fifteen years or so — and then nearly vanishing as they tilt edge-on. We are approaching one of those disappearing acts. Understanding the geometry, and how to watch it unfold, makes an ordinary telescope into a front-row seat for orbital mechanics.
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Astronomy
Webb found water in the disk where a planet is forming right now
Using the James Webb Space Telescope, astronomers have detected vast amounts of water vapor in the inner region of a protoplanetary disk — the ring of gas and dust that surrounds a young star and eventually assembles into planets. It's direct evidence that planets can begin their lives wet.
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Missions
NASA crashed a spacecraft into an asteroid on purpose. It worked better than the models said it would.
The DART spacecraft impacted asteroid Dimorphos on September 26, 2022, reducing its orbital period by 33 minutes — far more than the minimum 73-second threshold for mission success. The result has permanently changed how planetary defense is planned.
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Missions
Solar Orbiter flew closer to the Sun than any imaging spacecraft before it. What it saw was unexpected.
ESA's Solar Orbiter has returned the closest images ever taken of the Sun, revealing thousands of tiny flares — dubbed 'campfires' — across the solar surface. It is also the first spacecraft designed to image the Sun's poles, solving a geometry problem that has frustrated solar physicists for decades.
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Missions
India landed on the Moon's south pole when others had failed. What Pragyan found in two weeks.
Chandrayaan-3's Vikram lander touched down near the lunar south pole on August 23, 2023, making India the fourth nation to soft-land on the Moon and the first to reach the polar region. The Pragyan rover operated for two weeks before entering sleep mode and has not reawakened.
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Missions
Before it died, InSight mapped the inside of Mars — and nothing was what we expected
NASA's InSight lander operated on Mars for four years, recording more than 1,300 marsquakes and making the first seismic measurements of another planet's interior. Its findings rewrote models of how rocky planets form.
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Missions
The asteroid Bennu handed us clay and carbon. Scientists are still processing what that means.
OSIRIS-REx returned 121 grams of material from asteroid Bennu in September 2023 — the largest asteroid sample ever brought to Earth. The rocks contained water-bearing clay minerals and carbon-rich organics, direct evidence of chemistry that preceded the formation of the solar system.
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