We all know that a black hole comes from the gravitational collapse of a very massive star. Now, throughout the 20th century we have been learning that this is not the only type of black hole that exists in the universe.
The European Space Agency has unanimously decided to definitively suspend the ExoMars program and define new options in the future for this astrobiological space mission to Mars.
The seasons are something natural, but their astrophysical origin is not trivial, and the seasons on other planets can be very different from those on Earth.
Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.
