有问必答(第 3 页)

流行科学 回答您最奇特、最烧脑的问题，从寻常到稀奇古怪。

最新有问必答

a bird with white and black plummage and an egg on a nest and three other birds standing around her
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作者：Laura Baisas

(Original Caption) 1938-Close-up of the very front end of a 1938 Cadillac La Salle. This smaller counterpart to the Cadillac features a smaller radiator grille, and four headlights, as well as the hood ornament and bumper.
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作者：Kristin Shaw

Voyager Golden Record cover on black background
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作者：Andrew Paul

flying with cellphone airplane mode
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作者：Tom Hawking

The long finger sticking out of the Sun at the bottom left of this image is a coronal mass ejection. It was captured by NASA’s Solar Dynamics Observatory on August 31, 2012.
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作者：Harriet Weber

an orange cat with green eyes with its tongue out
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作者：Clarissa Brincat

Anything with mass cannot reach lightspeed.
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作者：Lauren Leffer

a slice of jelly toast faced down on the floor
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作者：Clarissa Brincat

dog kissing human licking face
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作者：Lauren Leffer

A Tesla Model 3 engaged in the so-called ‘Full Self Driving’ mode reportedly plowed through a deer without ever detecting it. While more advanced driverless systems use a mix of sensors including LiDAR, Tesla is trying to attain full autonomy using only cameras.
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作者：Mack DeGeurin

mercury broken thermometer
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作者：Lauren Leffer

Peach and Blossom, the National Thanksgiving Turkeys, are seen on the South Lawn of the White House before recieving a Presidential Pardon from US President Joe Biden in Washington, DC, on November 25, 2024.
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作者：Mack DeGeurin

a body on a morgue table with only the feet showing and a toe tag on the big toe
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作者：RJ Mackenzie

brain glitch
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作者：Julia Craven

toes in pool
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作者：Lauren Leffer

the sound of your own voice
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作者：Julia Craven

raw milk poured into a glass
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作者：Lauren Leffer

An image of the Sun from June 20, 2013, at 11:15 p.m. EDT.
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作者：Harriet Weber

young woman in bed with alarm clock and eyes opened suffering insomnia and sleep disorder thinking about his problem on dark studio lighting in sleeping and nightmare issues
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作者：Andrew Paul

Pompeii ruins
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作者：Lauren Leffer

A graphic depicting the inner workings of a 2024 Toyota Mirai, showing the vehicle's hydrogen storage system, fuel cell, and electric motor.
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作者：Harriet Weber

Janet Leigh screaming during iconic shower scene in Alfred Hitchcock's 'Psycho.'
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作者：Andrew Paul

poppy seed bagel
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作者：Lauren Leffer

Group of Snow Geese in elegant flight against blue sky at Bosque del Apache wildlife refuge in New Mexico in winter.
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作者：Lauren Leffer

A variety of behaviors can foster muscle tension and lead to knots.
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作者：Harriet Weber

This artist concept illustrates the frenzied activity at the core of our Milky Way galaxy. The galactic center hosts a supermassive black hole in the region known as Sagittarius A*, or Sgr A*, with a mass of about four million times that of our sun.
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作者：Alex Hazlett

Using the microwave oven to heat food. Woman's hand puts plastic container with broccoli and buckwheat in the microwave
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作者：Lauren Leffer

a space craft floats in space
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作者：Alex Hazlett

Contrail clouds from passing jet planes streak the sky over the Utah desert.
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作者：Lauren Leffer

child playing with fidget spinner
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作者：Lauren Leffer

Human ear closeup
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作者：Lauren Leffer

couple in bed
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作者：RJ Mackenzie

hands reaching out to tickle you
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作者：Lauren Leffer

baby sloth poses for the camera on the tree
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作者：Alex Hazlett

Pouring cooking oil from bottle into frying pan, closeup
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作者：Lauren Leffer

A rare visitor, a Mandarin Duck, showed up in Central Park, New York City in 2018.
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作者：Lauren Leffer

chewing gum pieces on red background
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作者：汉娜·徐

Oil Pulling Mouthwash, dental oral hygiene rinse aid liquid, trendy alternative detoxifying mouthwash with toothbrush, toothpaste for cleaning teeth on bath background
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作者：汉娜·徐

man sneezing on a colorful, illustrated background
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作者：RJ Mackenzie

Orange juice with spoon of collagen
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作者：汉娜·徐

Dog sitting in nature in sunglasses
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作者：Jocelyn Solis-Moreira

three colored bamboo toothbrushes in a ceramic glass on green background
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作者：Jocelyn Solis-Moreira

a person's hands typing on a laptop keyboard
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作者：流行科学团队

robot doctor talks to elderly person sitting in chair
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作者：Keith Wagstaff

A person wearing running shorts holding their thigh on a beach, potentially wondering what happens when you pull a muscle, because they probably just did.
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作者：Nicole Wetsman

engineers working on voyager 2
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作者：流行科学团队

Magnetic tape and Blu-Ray Discs for data storage forming an infinity sign on a yellow background. Illustrated.
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作者：Charlotte Hu

Red and pink pill on yellow background with Swiss army knife coming out of it to symbolize off-label use of medications. Illustrated.
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作者：Jocelyn Solis-Moreira

An airplane taking off toward the camera at dusk, with lights along the runway and on the front of the plane, against a cloudy reddish sunset.
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作者：Rob Verger

illustration of person at computer with devil horns and cloven hooves
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作者：Julia Craven

illustration of astronaut floating in space
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作者：Maria Parazo Rose

illustration of people on rollercoaster
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作者：Purbita Saha

illustration of woman navigator
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作者：Kat Eschner

illustration of pufferfish on a fork
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作者：Charlotte Hu

illustration of free-falling woman
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作者：Leigh Cowart

a woman looks in the mirror as she pinches a pimple on her check with her two pointer fingers
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作者：Chelsey B. Coombs

x-ray of impacted wisdom tooth
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作者：Sara Chodosh

Bees hanging onto each other
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作者：Philip Kiefer

Germs and dirt around a playful child illustrated
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作者：Jesse Greenspan

An hypothetical illustration of society running on garbage.
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作者：萨拉·凯莉·沃森

Person with brown curly hair on a tablet looking unhappy while going back to work after vacation
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作者：Jordan Blok

Jack Russell terrier dog facing a podcast microphone to record a science show
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作者：PopSci 编辑

What happens if you eat too many Tums?
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作者：克莱尔·马尔达雷利

Is it safe to take expired medication?
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作者：Nicole Wetsman

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