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immune system

Elements from the universe’s earliest stars gave birth to our sun

Space

Elements from the universe’s earliest stars gave birth to our sun

It is easy to regard the sun as humdrum, yet it contains elements blasted from the universe’s first stars as they died and is halfway through its 9-billion-year lifespan

Comment

Dexamethasone

Definition

Dexamethasone

We may have found 19 more interstellar asteroids in our solar system

Space

We may have found 19 more interstellar asteroids in our solar system

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Planet Nine

Space

Mysterious ‘Planet Nine’ on the solar system’s edge may not be real

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An asteroid strike may have popped the surface of Mars

Space

An asteroid strike may have popped the surface of Mars

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Venus

Space

Venus may have an underground magma ocean spanning the whole planet

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Computer illustration of plasma cells (B-cells) secreting antibodies against viruses

Definition

Antibodies

Eating too much salt seems to impair body's ability to fight bacteria

Health

Eating too much salt seems to impair body's ability to fight bacteria

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How to fight infection by turning back your immune system's clock

Humans

How to fight infection by turning back your immune system's clock

Features

Asteroid

Space

Tiny meteorite found in Antarctica came from an unknown asteroid

A tiny meteorite found in Antarctica doesn’t match any asteroid or comet we know of. Instead, it must have come from a mystery parent body that’s full of water

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Definition

Cytokine storm

Space

Bombing asteroid Ryugu reveals it is a spritely 9 million years old

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Space

Comet 67P is hiding nitrogen that could solve a solar system mystery

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Space

NASA missions may go to Venus or our solar system’s strangest moons

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