Are gravity and magnetism related?

Is dementia an inherited condition?

02 May 2025

Presented by Chris Smith with Clarence Ford, 567 CapeTalk.

EARTH-GRAVITY-WELL

Artist concept of Gravity Probe B orbiting the Earth to measure space-time, a four-dimensional description of the universe including height, width, length, and time.

Credit:

CC0, NASA

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In this week's Ask!, Dr Chris explains what we know about deja vu (have we had this one before?) Also, what might have been behind the major power outages in Spain, and what exactly was the Carrington Event? What causes the differences between summer and winter here on Earth?