Science | WPN World People News

The trigger for “Snowball Earth” global ice ages may have been drops in incoming sunlight that happened quickly, in geological terms, according to an MIT study.

Trace Gas Orbiter at Mars

RAVE observed nearly half a million stars of our Galaxy. The Sun is located at the centre of the coordinate system. The colours represent radial velocities: red are receding stars and stars depicted in blue are approaching.

Integral: gamma-ray observatory

CfA Scientists and Team Take a Look Inside the Central Engine of a Solar Flare for the First Time

X-ray experiments at Berkeley Lab’s Advanced Light Source helped scientists to establish that the parent planetesimal of rare meteorites, like the one shown here, had a molten core, a solid crust, and a magnetic field similar in strength to the Earth’s magnetic field.

NASA's Mars rover Perseverance

Samples from a rare meteorite family, including the one shown here, reveal that their parent planetesimal, formed in the earliest stages of the solar system, was a complex, layered object, with a molten core and solid crust similar to Earth.

Seismic noise is measure by seismometers. These are sensitive scientific instruments to record vibrations travelling through the ground – known as seismic waves. Traditionally, seismology focuses on measuring seismic waves arising after earthquakes. Seismic records from natural sources however are contaminated by high-frequency vibrations (“buzz”) from humans at the surface – walking around, driving cars, public transport, heavy industry and construction work all create unique seismic signatures in the subsurface that are recorded on seismometers. The buzz is stronger during the day than at night and weaker on weekends than weekdays.