The James Webb Space Telescope: What It Has Taught Us About the Universe
Since it began observing in 2022, the James Webb Space Telescope has reshaped our view of the early universe, distant galaxies…
#Astronomy
Stories tagged “Astronomy”.
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What Is Dark Matter? The Universe's Missing Mass
Dark matter is an invisible form of mass that appears to outweigh ordinary matter several times over. We infer it from gravity…
What Is a Black Hole?
A black hole is a region of space where gravity is so strong that nothing, not even light, can escape. This clear guide explains…
How Do Telescopes Work?
Telescopes work by gathering and focusing light to make distant, faint objects appear brighter and bigger. This guide explains…
The Big Bang, Explained
The Big Bang is the leading scientific explanation for how the universe began: not an explosion in space, but the expansion of…
Comets, Asteroids and Meteors: What's the Difference?
Comets, asteroids, meteoroids, meteors and meteorites are easy to confuse. This guide explains what each one is, what they are…
What Causes the Seasons?
The seasons are caused by the tilt of Earth's axis, not its distance from the Sun. This guide explains why the tilt matters, why…
What Is a Galaxy?
A galaxy is an enormous, gravity-bound system of stars, gas, dust and dark matter. This guide explains what galaxies are made of…
How Do Solar Eclipses Happen?
A solar eclipse happens when the Moon passes directly between the Earth and the Sun, casting its shadow on our planet. Here is…