午夜福利1000集合

2CA4Y7K Comet crashing into earth

How would we spot an antimatter comet in our solar system? Part 2

Collisions with the solar wind would ensure we were well aware of an antimatter comet entering our solar system, explains one reader

cofee cup on the sand at the sunset; Shutterstock ID 1450632401; purchase_order: -; job: -; client: -; other:

This week鈥檚 new questions

Environment

Dramatic images show where water and humanity meet

Twisteddoodles on when facial recognition tech goes wrong

Tom Gauld on the necessity of good supportive evidence

Mathematics

The 19th-century maths that can help you deal with horrible coffee

CHEETAH acinonyx jubatus, Adult running through Savannah ; Shutterstock ID 1652757304; purchase_order: -; job: -; client: -; other:

Must the evolution of any adapted trait in nature reach a limit?

2CA4Y7K Comet crashing into earth

If an antimatter meteor came into our solar system, how would we know?

2M5GPCD Preparations of plants with bubble wrap for the winter

Should bubble wrap face the inside or outside of the object? Part 2

This sequence of artist's illustrations shows how a black hole can devour a bypassing star. 1. A normal star passes near a supermassive black hole in the center of a galaxy. 2. The star's outer gasses are pulled into the black hole's gravitational fie

This week鈥檚 new questions

Do black holes look doughnut-shaped when viewed in all directions? And what are the pros and cons of using carbon dioxide in tyres?

Comment

Kim Kardashian has wrangled an invite to NASA HQ. Can we get one too?

Technology

Remarkable robot images provide a vision of the future

Twisteddoodles: ‘I’m a little beaker, short and stout…’

Tom Gauld on a portal to an alternate universe