Space

128 articles with this tag

How Free-Return Trajectories Work—and Why They Save Lives Science

How Free-Return Trajectories Work—and Why They Save Lives

A free-return trajectory uses the Moon's gravity to slingshot a spacecraft back to Earth without engine burns, serving as the ultimate safety net for...

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How Gamma-Ray Bursts Work—the Universe's Biggest Blasts Science

How Gamma-Ray Bursts Work—the Universe's Biggest Blasts

Gamma-ray bursts are the most powerful explosions in the known universe, releasing more energy in seconds than the Sun emits in its entire lifetime. H...

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How Microgravity Affects Fertility—and Why It Matters Science

How Microgravity Affects Fertility—and Why It Matters

As humanity plans missions to Mars and beyond, scientists are discovering that microgravity disrupts nearly every step of reproduction—from sperm navi...

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How NASA's Orion Spacecraft Works—and Why It Matters Technology

How NASA's Orion Spacecraft Works—and Why It Matters

NASA's Orion capsule is the first crewed vehicle designed for deep space since Apollo. Here is how its heat shield, life support, and navigation syste...

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How Atmospheric Reentry Works—and Why Speed Kills Science

How Atmospheric Reentry Works—and Why Speed Kills

Returning from space means slamming into a wall of air at thousands of kilometers per hour. The physics of atmospheric reentry—from blunt-body aerodyn...

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How Solar Flares Work—and Why They Threaten Earth Science

How Solar Flares Work—and Why They Threaten Earth

Solar flares are sudden eruptions of magnetic energy on the Sun that can disable satellites, knock out power grids, and disrupt GPS. Here's how they f...

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What Are Quasars and How Do They Shape Galaxies? Science

What Are Quasars and How Do They Shape Galaxies?

Quasars are the brightest objects in the universe, powered by supermassive black holes devouring matter at galactic cores. New research shows their ra...

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What Are Supervolcano Calderas and How Do They Refill? Science

What Are Supervolcano Calderas and How Do They Refill?

Supervolcano calderas are massive craters formed when colossal eruptions drain underground magma chambers, causing the surface to collapse. Scientists...

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How Superconductors Work—and Why We Want Them Warmer Science

How Superconductors Work—and Why We Want Them Warmer

Superconductors carry electricity with zero resistance, enabling MRI machines, maglev trains, and quantum computers. Scientists are racing to make the...

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Artemis II: NASA's First Crewed Moon Mission in 53 Years Science

Artemis II: NASA's First Crewed Moon Mission in 53 Years

NASA is counting down to the April 1 launch of Artemis II, sending four astronauts around the Moon aboard the Orion spacecraft — the first crewed luna...

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How Helioseismology Works—Hearing Inside the Sun Science

How Helioseismology Works—Hearing Inside the Sun

Helioseismology uses millions of sound waves rippling through the Sun to map its hidden interior, much like an ultrasound scans the human body. The te...

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What Are Super-Earths and Why Scientists Hunt Them Science

What Are Super-Earths and Why Scientists Hunt Them

Super-Earths are exoplanets up to ten times Earth's mass that dominate our galaxy yet have no counterpart in our solar system. Scientists study them f...

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