Proba-2 catches solar eclipse

(Phys.org) -- Europe missed Sunday’s solar eclipse on the other side of the planet but ESA’s space weather microsatellite Proba-2 passed repeatedly through the Moon’s shadow.

Why aren't there eclipses every month?

If the sun, Earth and moon are lined up, shouldn't we get a lunar and solar eclipse every month? Clearly, we don't, but why not?

Why Einstein must be wrong: In search of the theory of gravity

Einstein's theory of gravity—general relativity—has been very successful for more than a century. However, it has theoretical shortcomings. This is not surprising: the theory predicts its own failure at spacetime singularities ...

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