Here is everything to know about the northern lights this week, including whether they will be visible in Arizona. The northern lights will actually be visible in 15 states tonight: Alaska. Washington ...

Neanderthals have long been the subject of intense scientific debate. This is largely because we still lack clear answers to ...

The craft helped solar boffins to discover that Sol’s north and south magnetic poles are both on the southern side of the ...

The European Space Agency's Solar Orbiter, in collaboration with NASA, has captured unprecedented images of the Sun's south ...