Astronomy Basics
Cosmic Latte: Why Astronomers Say the Average Color of the Universe Is Beige
Astronomers averaged the light from about 200,000 galaxies and found a pale beige composite color nicknamed cosmic latte.
Latest astronomy stories
Explore the universe, one clear story at a time.
Fresh astronomy guides with useful explanations, clean visuals and simple navigation. Newest articles are shown first.
Space Missions & Discoveries
JUICE Earth Flyby 2026: How ESA Used Our Planet to Bend a Path Toward Jupiter
ESA’s JUICE spacecraft skimmed past Earth on September 28, 2026, using gravity to change course and gain speed for its journey to Jupiter.
Night Sky Guide
October Spooky Stargazing 2026: Algol, the Witch Head and Other Eerie Sky Targets
NASA’s October skywatching notes highlight Algol, the Witch Head Nebula and other seasonal targets for autumn stargazing.
Stars & Variable Stars
XZ Andromedae: The Eclipsing Binary Star System That Appears to Wink
XZ Andromedae is an Algol-type eclipsing binary whose brightness drops when its cooler star passes in front of its hotter companion. Light-curve studies also hint that more stars may orbit the system.
Night Sky Guide
A Zodiacal Night: Why a Faint Pyramid of Light Glows Before Dawn
Zodiacal light is sunlight scattered by interplanetary dust. A 2026 view from the Hanle Dark Sky Reserve shows the faint glow stretching upward through the night sky with Jupiter, Mars and M44 nearby.
Stars & Nebulae
Cocoon Nebula Wide Field: A Stellar Nursery at the End of a Dark Dust Cloud
The Cocoon Nebula, IC 5146, glows at the end of a long dark cloud in Cygnus. A wide-field view reveals both the bright stellar nursery and dusty filaments where new stars are still forming.
Black Holes & Galaxies
Messier 33: The Triangulum Galaxy and Its Huge Star-Forming Regions
Messier 33 is a face-on spiral galaxy about 3 million light-years away. Its blue star clusters, pink nebulae and giant NGC 604 region make it one of the Local Group’s most active nearby galaxies.
Astronomy Basics
Analemma Over the Callanish Stones: Why the Sun Draws a Figure-8 Across the Year
Photographing the Sun from the same place at the same time over many months reveals an analemma—a figure-8 pattern caused by Earth’s axial tilt and elliptical orbit.
Space Missions & Discoveries
NASA’s Swift Restores Its Third Instrument and Automatic Gamma-Ray Burst Tracking
Swift has restored its Burst Alert Telescope and automatic gamma-ray burst slewing, returning the observatory to full three-instrument science operations.
Mars & Planetary Science
Perseverance Finds Three Chapters of Ancient Water History in Jezero Crater
A new NASA study shows that Jezero Crater’s Margin Unit records several different episodes of ancient water, from groundwater to lake conditions and later hot fluids.
Planets & Exoplanets
Elias 2-24 b: Youngest Known Exoplanet Is Less Than 1 Million Years Old
Astronomers confirmed Elias 2-24 b as a world less than one million years old, still embedded in the disk where planets are forming around its star.
Black Holes & Galaxies
Webb Reveals M64: The Black Eye Galaxy’s Counter-Rotating Gas and Dust
Webb’s infrared view of Messier 64 exposes warm dust and active star-forming regions where two gas systems rotate in opposite directions.
Stars & Nebulae
Webb Opens the Treasure Chest Nebula: A 1.3-Million-Year-Old Star Cluster
Webb’s NIRCam peers into a dusty Carina Nebula globule containing about 70 young stars in a cluster estimated to be around 1.3 million years old.
Black Holes & Galaxies
Webb’s Little Red Dots: The Saguaro Galaxy May Reveal Their Hidden Family Tree
A lower-redshift spiral nicknamed the Saguaro may show how some mysterious Webb “little red dots” are connected to obscured active galactic nuclei and hidden host galaxies.
Galaxies & Hubble
Hubble Reveals NGC 4698: The Spiral Galaxy Rotating Out of Sync
Hubble’s new view of NGC 4698 reveals a Virgo Cluster spiral whose central stars and gas rotate at right angles to its main disk, hinting at a complex past.
Moon & Solar System
McGetchin Crater: LRO Spots a Rare New Impact Scar on the Moon
NASA’s Lunar Reconnaissance Orbiter found McGetchin crater, a 728-foot-wide impact scar formed in 2024 and surrounded by a surprising nighttime cold spot.
Earth & Space Weather
Purple Haze Aurora: Why Earth Glowed Green, Red and Purple From the ISS
An astronaut photographed a vivid green-and-purple aurora from the ISS on September 7, 2026. Here is what creates the colors and why equinox season matters.
James Webb & Stars
Webb’s IC 348 Panorama Finds Brown Dwarfs Only Twice Jupiter’s Mass
Webb’s huge new panorama of IC 348 reveals extremely low-mass brown dwarfs, a possible disk around one of them, and dramatic newborn-star jets.
Pulsars & X-Ray Astronomy
XRISM Watches a Pulsar Capture Its Companion Star’s Wind
NASA and JAXA’s XRISM mission directly traced hot plasma falling toward pulsar GX 301-2 in the BP Crucis system, revealing how a neutron star feeds during powerful X-ray flares.
Planets & Exoplanets
Europa’s Hidden Ocean: Why Jupiter’s Icy Moon Could Be Habitable
Europa is wrapped in ice, but evidence points to a global salty ocean beneath the surface. Here is why scientists consider it one of the Solar System’s most important places to investigate for habitability.
Planets & Exoplanets
Venus Explained: How Earth’s Twin Became the Hottest Planet
Venus is close to Earth in size, yet its surface is hot enough to melt lead and buried beneath crushing pressure. The difference is a lesson in atmospheres, climate and planetary evolution.
Black Holes & Galaxies
Quasars Explained: How Feeding Black Holes Can Outshine Entire Galaxies
Quasars are powered by matter falling toward supermassive black holes. Their extreme brightness lets astronomers study black-hole growth, early galaxies and gas across the distant universe.
Astronomy Basics
Cosmic Microwave Background: The Oldest Light We Can See
The cosmic microwave background is a faint microwave glow from the young universe. Its tiny temperature variations preserve a map of the seeds that later grew into galaxies and cosmic structure.
Planets & Exoplanets
Rogue Planets: Worlds Drifting Through Space Without a Star
Some planetary-mass objects appear to travel through the galaxy without orbiting a host star. Microlensing surveys can reveal these dark, free-floating worlds even when they produce almost no light of their own.
Astronomy Basics
Solar Wind Explained: How the Sun Creates a Giant Bubble Around Our Solar System
The Sun constantly releases a stream of charged particles called the solar wind. It fills interplanetary space, drives space weather and helps create the heliosphere surrounding the planets.
Space Missions & Discoveries
Euclid Maps 60 Million Stars in the Milky Way’s Crowded Heart
ESA’s Euclid telescope has captured an extraordinary view of the Milky Way’s central bulge, revealing dense star fields and new microlensing opportunities.
Space Missions & Discoveries
Webb Finds Water and Fresh Dust Near the Milky Way’s Supermassive Black Hole
Webb observations of IRS 3 show that water and oxygen-rich dust can survive unexpectedly close to Sagittarius A* at our galaxy’s center.
Galaxies & Nebulae
Hubble Reveals N44: A Giant Superbubble Where New Stars Are Being Born
A fresh Hubble view of N44 in the Large Magellanic Cloud shows how stellar winds and supernovae shape star-forming bubbles.
Black Holes & Galaxies
Webb Resolves 16.5 Million Stars in the Cigar Galaxy M82
Webb’s deep infrared survey pierces the dust of M82 and reveals millions of individual stars across the famous starburst galaxy.
Black Holes & Galaxies
Webb Exposes the Hidden Aftermath of a Cosmic Collision in Centaurus A
A new Webb infrared view of Centaurus A reveals warped dust, huge stellar populations and the influence of a feeding black hole.
Planets & Exoplanets
Exoplanet Hunting: How Scientists Find New Worlds Beyond Our Solar System
Learn the main methods astronomers use to discover planets around other stars, from transits to tiny stellar wobbles.
Space Missions & Discoveries
The James Webb Space Telescope: A New Era of Discovery
How Webb uses infrared light, a giant segmented mirror and a cold deep-space orbit to study the early universe and distant worlds.
Night Sky Guide
Moon Phases: A Simple Guide to the Changing Face of the Moon
Understand new moon, crescent, quarter, gibbous and full moon phases — and why Earth’s shadow is not the cause.
Space Missions & Discoveries
Space Exploration in 2026: Missions and Milestones to Watch
A current look at major spaceflight milestones, recent launches and missions still scheduled for the rest of the year.
Black Holes & Galaxies
The Mysteries of Dark Energy: What Is Pushing the Universe Apart?
A beginner-friendly explanation of cosmic acceleration, what astronomers mean by dark energy, and why the answer is still uncertain.
Astronomy Basics
Earth from Space: What Orbiting Satellites Reveal About Our Home Planet
From city lights to clouds, oceans and vegetation, satellite views turn Earth into a measurable, changing system.
Planets & Exoplanets
The Search for Alien Life: How Scientists Look for Evidence Beyond Earth
Scientists search for life by studying habitable environments, atmospheric chemistry, radio signals and worlds in our Solar System.
Planets & Exoplanets
Dwarf Planets: The Small Worlds With Big Stories
Meet Pluto, Ceres, Eris, Haumea and Makemake, and learn what makes a dwarf planet different from a major planet.
Black Holes & Galaxies
Gravitational Waves: Ripples in the Fabric of Space-Time
Learn how colliding black holes and neutron stars create measurable ripples in space-time and how detectors find them.
Space Missions & Discoveries
Space Tourism: The Next Frontier for Everyday Travelers?
What commercial space tourism offers today, why it remains expensive, and what would need to change before it becomes ordinary travel.
Planets & Exoplanets
Mars Today: Surface, Climate and the Search for Ancient Water
Explore Mars as it is today and learn why its dry landscape still contains strong evidence that liquid water once shaped the planet.
Night Sky Guide
Meteor Showers: When and How to Watch Shooting Stars
Learn why meteor showers return each year, what creates shooting stars, and how to get the best view without any telescope.
Black Holes & Galaxies
Black Hole Accretion Disks: Why Matter Glows Before It Disappears
Understand how hot accretion disks form around black holes and why the brightest light can come from material outside the event horizon.
Black Holes & Galaxies
Nebulae Explained: The Colorful Clouds Where Stars Are Born
Discover what nebulae are, why some glow while others appear dark, and how giant clouds of gas and dust can create new stars.
Black Holes & Galaxies
The Andromeda Galaxy: Our Giant Galactic Neighbor
Learn where the Andromeda Galaxy is, how large it is, why it is moving toward the Milky Way, and what astronomers expect in the distant future.
Planets & Exoplanets
A Simple Guide to the Solar System and Its Eight Planets
Meet the eight planets, understand their order from the Sun, and learn how rocky worlds differ from giant planets.
Astronomy Basics
The Moon's Surface: Craters, Maria and Mountains Explained
Explore the Moon's major surface features, including impact craters, dark maria, highlands and the clues they preserve about lunar history.
Astronomy Basics
Moon Phases Explained: Why the Moon Changes Shape
A beginner-friendly guide to the lunar cycle, from new moon to full moon, and why the Moon's appearance changes through the month.
Planets & Exoplanets
Planets and Exoplanets: What's the Difference?
Understand the difference between Solar System planets and exoplanets, how astronomers find distant worlds, and what scientists learn from them.
Black Holes & Galaxies
Black Holes: A Simple Guide for Beginners
Learn what a black hole is, what an event horizon means, how black holes form, and why they do not simply suck up everything around them.