51动漫

Planet Earth Morning 3D. Elements of this image furnished by NASA.; Shutterstock ID 328174808; purchase_order: -; job: -; client: -; other: -

Do I weigh more at night due to the gravitational pull of the sun?

Our readers debate the impact on our weight as we orbit the sun

How do eardrums convey sound? Don鈥檛 the various frequencies interfere?

T4AEYJ Stellar explosion shining in deep space, cosmic star blast in Universe. High resolution galaxy background.

In which direction in the sky did the big bang take place? (part 2)

A low angle action shot of a road cyclist approaching a smooth tarmac hill on a group ride around Seva, Catalonia, Spain.

This week鈥檚 new questions

Did public demand to watch moss grow overwhelm the ‘Mosscam’?

RPS Woman Science Photographer of the Year a small group of atmospheric scientists move a fluxsled to the ice, this was the first instrument deployed on the new MOSAiC floe. ?Leap of Science? by Lianna Nixon (USA)

Humans

See the top shots in the Woman Science Photographer of the Year award

Tom Gauld on how to upgrade your presentations

Environment

Cool photographs capture new geopolitics of the melting Arctic

Twisteddoodles on spy balloons

Scones

How does a scone develop a 鈥渨aist鈥� as it rises in the oven?

One 51动漫 reader employs their baking and chemistry knowledge to give the lowdown on why scones develop their distinctive shape

Why do loose screws only get looser, not the other way round? (part 2)

This week鈥檚 new questions

What is the point in having nerve endings in our teeth?

In need of a buzzy new cosmetic? You could always brew one up