YR4 is back in the spotlight. Brand new research has produced a better estimate of its size and orbit, which give it a 3.8 ...

The moon's contraction could lead to the moonquakes that seismometers (placed on the lunar surface by the Apollo astronauts) have detected. If moonquakes are severe enough in some parts of the ...

The piece of equipment in his right hand is a laser reflector, used to measure the Earth-moon distance precisely. A seismometer package is in Buzz's left hand.","credit":"Neil Armstrong—NASA ...

[10DotMatrix] has a budding interest in seismology, so she decided to make her own seismometer out of some easy-to-find materials. Seismometers are prohibitively expensive for hobbyists ...