World Explained · world
Why Voyager 1 reaching one light-day from Earth matters
Voyager 1 is due to reach one light-day from Earth on November 18. Here is what the milestone measures, why NASA is conserving power and what it cannot prove.
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Newest first
United States
World Explained · Body and senses
Why does stepping into sunlight make some people sneeze?
It is called the photic sneeze reflex. Bright light can trigger the sneeze circuit in susceptible people, but the exact nerve crossover remains unsettled.
World Explained · Ocean science
How many types of sharks are there? Why they look so different
There are more than 500 described shark species. Their different shapes show how one cartilaginous fish blueprint has adapted to feeding and living in very different waters.
World Explained · Transport and engineering
Why bird strikes can be so dangerous for a jet engine
A bird strike is not just a dent in an aircraft. If a bird is ingested by a jet engine, fast-moving fan blades and the engine core can be affected.
World Explained · Travel and systems
A ground stop keeps an airport queue from forming in the sky
An FAA ground stop holds selected departures before takeoff when an airport cannot safely accept its expected flow. Here is why the delay spreads far beyond that airport.
World Explained · History and landscapes
Lake Mead’s ghost town was not lost—it was waiting below the waterline
St Thomas was deliberately evacuated and flooded as Lake Mead filled. Falling water later exposed its roads and foundations, turning reservoir level into a moving history line.
Newest first
United Kingdom
World Explained · world
Why Voyager 1 reaching one light-day from Earth matters
Voyager 1 is due to reach one light-day from Earth on November 18. Here is what the milestone measures, why NASA is conserving power and what it cannot prove.
World Explained · Body and senses
Why does stepping into sunlight make some people sneeze?
It is called the photic sneeze reflex. Bright light can trigger the sneeze circuit in susceptible people, but the exact nerve crossover remains unsettled.
World Explained · Ocean science
How many types of sharks are there? Why they look so different
There are more than 500 described shark species. Their different shapes show how one cartilaginous fish blueprint has adapted to feeding and living in very different waters.
World Explained · Transport and engineering
Why bird strikes can be so dangerous for a jet engine
A bird strike is not just a dent in an aircraft. If a bird is ingested by a jet engine, fast-moving fan blades and the engine core can be affected.
World Explained · Space and astronomy
London will see a 91% eclipse at 7:13 p.m. — but it will not be total
London's maximum eclipse on 12 August 2026 is 91%, but the remaining bright crescent means it is a partial eclipse. The Moon's narrow inner shadow falls elsewhere.
World Explained · Archaeology and trade
Five hundred amphorae can turn a shipwreck into a map of Roman trade
A Roman wreck found off Sicily carries hundreds of Dressel 1A amphorae. Their shapes, origins and arrangement may reveal what the ship carried and where it was travelling.
Newest first
Canada
World Explained · world
Why Voyager 1 reaching one light-day from Earth matters
Voyager 1 is due to reach one light-day from Earth on November 18. Here is what the milestone measures, why NASA is conserving power and what it cannot prove.
World Explained · Body and senses
Why does stepping into sunlight make some people sneeze?
It is called the photic sneeze reflex. Bright light can trigger the sneeze circuit in susceptible people, but the exact nerve crossover remains unsettled.
World Explained · Ocean science
How many types of sharks are there? Why they look so different
There are more than 500 described shark species. Their different shapes show how one cartilaginous fish blueprint has adapted to feeding and living in very different waters.
World Explained · Transport and engineering
Why bird strikes can be so dangerous for a jet engine
A bird strike is not just a dent in an aircraft. If a bird is ingested by a jet engine, fast-moving fan blades and the engine core can be affected.
World Explained · Aviation and design
The A380 only makes sense when an airline can fill a very large promise
The four-engine superjumbo is costly to operate when demand is thin, but one full A380 can move a huge crowd through a scarce airport slot and support a premium long-haul product.
World Explained · Digital evidence
Content Credentials can prove a history without proving a picture is true
Content Credentials bind signed claims about a file's origin and edits to the file itself. They expose tampering with that record, but they cannot verify the scene or caption.
Newest first
Australia
Australian Curiosity · Wildlife
Why echidnas lay eggs but still count as mammals
An echidna hatches from a soft egg, then depends on months of milk released through pores in its mother's skin. Both parts belong to one mammalian story.
World Explained · Body and senses
Why does stepping into sunlight make some people sneeze?
It is called the photic sneeze reflex. Bright light can trigger the sneeze circuit in susceptible people, but the exact nerve crossover remains unsettled.
World Explained · Digital evidence
Content Credentials can prove a history without proving a picture is true
Content Credentials bind signed claims about a file's origin and edits to the file itself. They expose tampering with that record, but they cannot verify the scene or caption.
World Explained · Biology and perception
Your fingerprint began as three ridge waves meeting before birth
Fingerprints form when gene-guided ridge waves spread from a fetal fingertip's pad, nail edge and flexion crease. Their timing and geometry shape each pattern.
World Explained · Quantum computing
A neutral-atom quantum computer can rearrange its qubits mid-calculation
Laser tweezers let a neutral-atom processor shuttle qubits between storage, logic and readout zones, then replace lost atoms while a longer calculation continues.
World Explained · Food and chemistry
A popcorn kernel builds a steam engine and launches itself
A hard popcorn shell traps steam until hot starch breaks through, forms a temporary leg and flips the kernel. The pop is released vapour, not the shell cracking.
Newest first
Global
World Explained · Physics and space
How can scientists tell whether a cracked CubeSat solar panel still works?
Photoluminescence maps damaged cells; a pulsed AM0-like simulator measures electrical response. Da Vinci's result is preliminary, not a flight-ready verdict.
World Explained · Physics and space
How will ESCAPADE use a powered Earth flyby to reach Mars?
ESCAPADE will combine Earth's gravity with a roughly nine-minute engine burn near closest approach. Here is what the maneuver changes—and what NASA has not yet proved.
World Explained · Physics and space
How an ancient star cluster can reveal clues to the Milky Way's past
Messier 30 preserves clues in its stars' light, ages and motion. Hubble observations show what that record can—and cannot—say about the Milky Way's past.
World Explained · Physics and space
How did a CME shock help accelerate relativistic protons on 21 November 2024?
A multi-spacecraft study finds early flare signatures plus an evolving CME-shock contribution—and shows why one accelerator cannot explain the whole event.
World Explained · Physics and space
How can a flare alert tell a sounding rocket when to launch?
A flare alert combines X-ray, ultraviolet and imaging data to help a sounding-rocket team choose a launch window before the brief observation flight ends.
World Explained · Physics and space
How small spacecraft can trace where solar-flare electrons gain energy
PADRE and MeDDEA use hard X-rays, two viewpoints and polarization clues to trace how flare electrons move—without pretending to photograph the acceleration site.
Original writingEvery story is written for this publication.
Sources you can openFactual stories link to primary or authoritative material.
Clear correctionsMaterial errors are fixed and explained.