Astronomy
Why Do Stars Twinkle?
Stars twinkle because their light crosses turbulent layers of Earth’s atmosphere whose temperature and density are constantly changing. Those moving pockets bend the light…
Oct 3, 2026 • 13 min readBEYOND OUR WORLD
Space & The Universe
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EDITOR’S PICK
The Hidden Oceans Beneath the Solar System’s Icy Moons
Some of the solar system’s largest oceans never see the Sun. Gravity, magnetic fields and plumes reveal liquid water beneath the ice of distant moons.
Sep 16, 2026 • 4 min readRead the discovery →LATEST
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Astronomy
Why Do Stars Twinkle?
Stars twinkle because their light crosses turbulent layers of Earth’s atmosphere. Pockets of air with different temperatures and densities bend the narrow beam by…
Oct 3, 2026 • 12 min read
Planetary Science
Why Is Mars Red?
Mars looks red because iron-bearing minerals in its rocks and dust became oxidized. Ferric iron compounds absorb more blue and green light and reflect…
Oct 1, 2026 • 12 min read
Astronomy
Why Is Venus Hotter Than Mercury?
Mercury is closer to the Sun, but Venus is hotter because its massive carbon-dioxide atmosphere traps outgoing infrared energy. Venus averages about 464°C at…
Oct 1, 2026 • 14 min read
Astronomy
Why Pulsars Are the Universe’s Precision Clocks
Rapidly rotating neutron stars sweep radio or high-energy beams past Earth with extraordinary regularity, making them tools for studying gravity and interstellar space.
Sep 30, 2026 • 12 min read
Space & The Universe
How Cosmic Rays Create Particle Showers in the Atmosphere
High-energy particles from space collide with atmospheric nuclei and produce cascades of secondary particles that detectors can measure at the surface.
Sep 30, 2026 • 12 min read
Astronomy
How Radio Telescopes Work Together as One Giant Instrument
Astronomers combine precisely timed signals from separated antennas to synthesize the resolving power of a much larger telescope.
Sep 30, 2026 • 12 min read
Astronomy
How Pulsars Became Some of the Universe’s Best Clocks
Rapidly rotating neutron stars can sweep radio beams past Earth with extraordinary regularity, allowing astronomers to test gravity, map interstellar matter and search for…
Sep 28, 2026 • 12 min read
Space & The Universe
How Scientists Return Samples from Asteroids
Sample-return missions navigate to small bodies, collect carefully documented material and bring it to controlled laboratories where instruments can study grains far smaller than…
Sep 28, 2026 • 12 min read
Space & The Universe
How Lagrange Points Hold Spacecraft in Useful Orbits
Lagrange points are locations in a rotating two-body system where gravity and orbital motion combine so a smaller object can remain in a repeating…
Sep 28, 2026 • 12 min readWORTH KNOWING
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Astronomy
How Gravitational Waves Reveal Colliding Black Holes
Kilometre-scale laser interferometers measure minute changes in spacetime and reconstruct mergers far beyond the Milky Way.
Sep 21, 2026 • 12 min read
Space & The Universe
How Solar Storms Disturb Earth’s Technology
Activity on the Sun can launch radiation and magnetized plasma that disrupt radio, satellites, navigation and power systems near Earth.
Sep 21, 2026 • 13 min read
Space & The Universe
How Scientists Study the Atmospheres of Distant Planets
Astronomers separate tiny planetary fingerprints from starlight to infer gases, clouds, temperatures and winds on worlds light-years away.
Sep 13, 2026 • 8 min read
Astronomy
What Is Inside a Neutron Star?
A neutron star compresses more mass than the Sun into a sphere the size of a city, turning its interior into a laboratory for…
Sep 13, 2026 • 11 min read