Finding moons' hidden oceans with induced magnetic fields

In the 21st century, planetary scientists have become increasingly aware that subsurface oceans consisting of liquid water exist within objects throughout the solar system. Because water is a universal requirement for life ...

Death spiral: A black hole spins on its side

Researchers from the University of Turku, Finland, found that the axis of rotation of a black hole in a binary system is tilted more than 40 degrees relative to the axis of stellar orbit. The finding challenges current theoretical ...

Ocean eddies could explain Antarctic sea-ice paradox

Despite global warming and the sea-ice loss in the Arctic, the Antarctic sea-ice extent has remained largely unchanged since 1979. However, existing climate model-based simulations indicate significant sea-ice loss, contrary ...

Why is the North American fall so red compared with Europe?

Each fall, the leaves of almost half of North America's species of trees and shrubs turn red. But why is bewitching autumn foliage—to borrow from Mark Twain—so common in New England, but not in Europe?

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