We typically think of the Oort cloud as scattered ice balls floating far from the sun, yet still tied to it gravitationally.

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And now for something completely different: NASA’s Curiosity rover captured a feather-shaped cloud glowing in the Martian sky shortly after sunset on the Red Planet. It dates back to January ...

Free body diagrams do not need to be drawn to scale but it can sometimes be useful if they are. It is important to label each arrow to show the magnitude of the force it represents. The type of ...