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In this Voyager 2 image of Saturn, obtained Aug. 11, 1981, from a range of 14.7 million kilometers (9.1 million miles), north is at the upper right edge of the disc. Seen above the planet are the satellites Dione (right) and Enceladus. This false-color print shows a green spot at the south edge of a yellow band; in true color, the spot would appear brown and the band white. A bright yellow spot slightly above and to the left in this image moves eastward relative to the green spot at a rate that allows it to pass the green feature in about 50 days. The convective clouds that appear between the two spots are typical of the region. Here, the smallest visible structures measure about 270 kilometers (170 miles). The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif. https://www.jpl.nasa.gov/images/pia01959-voyager-2-image-of-saturn

What is the probability that Voyager 1 or 2 will hit a planet or star?

The likelihood of this happening is extraordinarily low, say our readers, because interstellar space is so vast

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Yellow wash scrub sponge placed on wet blue background covered with drops of water in light room during household chores; Shutterstock ID 2167323189; purchase_order: -; job: -; client: -; other: -

Why does a slightly damp sponge absorb water better than a dry one?

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2F4D4YW Two American crows sitting on a bare branch communicating with each other.

This week鈥檚 new questions

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FE11X8 Cyclist driving, at dusk, in a city street, with and without lights and safety clothing, bike safety, visibility at night

Which bicycle lights are safest and give the best visibility?

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2EXM9NK Hand Knuckle Finger Joint Crack. Fingers Snap

How can popped knuckles be so exceptionally loud?

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2JP8KPY Very tight parking in Italy with a small dented family car bumper to bumper squashed in next to two cars in a parking bay with only inches to move.

What is the shortest space a parked car can get out of? Part 2

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Asteroid impact event. Lateral sectioned view of an asteroid impact, similar to that which is thought to have caused the extinction of the dinosaurs around 65 million years ago. The impact took place at sea near the coast of the Yucatan Peninsula in Mexico, forming the Chicxulub crater (around 200 kilometres across). The impact threw trillions of tons of dust into the atmosphere and sent tsunamis (massive waves) around the globe, destroying coastal areas. Dust and water vapour in the atmosphere lowered global temperatures. Plant and then animal life began to die off. The dinosaurs never recovered, and mammals rose to become the dominant form of life.

This week鈥檚 new questions

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champagne spoon

Does putting a spoon in a bottle of champagne stop it losing its fizz?

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MGCGTA Two identical twins, sitting in cafe, wearing the same clothes, writing with both hands, simultaneously, London, England, UK

Why aren鈥檛 we equally capable with our left and right sides?

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ginger cat slumped over a branch stuck in a cherry tree; Shutterstock ID 1750273625; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

Humans make mistakes, but how often do other animals? Are some more prone to errors, and do they learn from experience? Plus, how heavy is Earth and how much weight could it sustain before caving in?

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As sound dissipates, what happens to this energy?

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Do winged animals ever suffer comparable mishaps to aircraft? Part two

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This week鈥檚 new questions

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What is the shortest space a parking car can get into?

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