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Luke Huxley is the founder of AstroTours.org and a passionate advocate for making astronomy accessible and exciting. A graduate in astrophysics from the University of Colorado, Luke combines his scientific background with storytelling to craft unforgettable stargazing experiences. He’s traveled the globe for astronomy, including a stint working with "Space Gandalf" in Australia which inspired him to start AstroTours.org. Luke hosts astronomy programs weekly just outside of boulder where he takes guests on a guided astronomy tour across the universe.
Recent Content

When you step outside on a crisp winter evening in Boulder, you’re greeted by a sky teeming with ancient myths and stories. One of the most compelling scenes unfolds in the southeast, where Orion ch…
When you step outsid…
When you step outside on a crisp winter evening in Boulder, you’re greeted by a sky teeming with ancient myths and stories. One of the most compelling scenes unfolds in the southeast, where Orion chases the Seven Sisters (Pleiades), with Sirius shining brightly nearby. It’s a celestial love triangle — or rather, a star-studded drama — that has fascinated skywatchers for centuries. A Tale of Pursuit: Orion and the Seven Sisters Orion, the mighty hunter, is among the most recognizable constellations in the winter sky. Its three-star “belt” points toward a faint cluster of s…


Light pollution doesn’t just rob us of starry skies — it disrupts wildlife, wastes energy, and even harms human health. Yet as bleak as this might sound, the solution is surprisingly straightforwa…
Light pollution does…
Light pollution doesn’t just rob us of starry skies — it disrupts wildlife, wastes energy, and even harms human health. Yet as bleak as this might sound, the solution is surprisingly straightforward: We can all take small steps to curb excessive lighting and restore the night sky to its natural brilliance. Here in Colorado, communities, businesses, and individuals are increasingly joining forces to tackle light pollution and safeguard our stunning celestial views. A Growing Problem — But One We Can Fix A recent Washington Post editorial highlights a stark reality: Global light po…


Colorado’s star-studded skies aren’t just a backdrop to our majestic mountains; they’re a celestial tapestry that inspires awe in everyone who ventures out after dark. From high-altitude passes …
Colorado’s star-st…
Colorado’s star-studded skies aren’t just a backdrop to our majestic mountains; they’re a celestial tapestry that inspires awe in everyone who ventures out after dark. From high-altitude passes to serene state parks, the Centennial State is home to some of the nation’s best stargazing locales. If you’re looking for places to escape city lights, reconnect with nature, or simply gaze in wonder at the cosmos, here are the top spots to consider. 1. Loveland Pass: A High-Altitude Haven Perched at over 11,000 feet, Loveland Pass offers an unparalleled view of the Milky Way and co…


When we think about the cosmos, the Sun often gets overshadowed by the allure of distant stars, planets, and the mysteries of the universe. But this glowing sphere of plasma, positioned 93 million mil…
When we think about …
When we think about the cosmos, the Sun often gets overshadowed by the allure of distant stars, planets, and the mysteries of the universe. But this glowing sphere of plasma, positioned 93 million miles away, is not just another star—it's our star. The Sun is the beating heart of the solar system and the engine driving life on Earth. The Sun: A Stellar Giant with a Familiar Glow Accounting for a staggering 99.86% of the solar system’s mass, the Sun exerts a gravitational pull that holds planets, comets, and asteroids in their orbits. It’s a G-type main-sequence star (or yellow dw…


The Moon, Earth’s closest neighbor and constant companion, has inspired countless myths, scientific discoveries, and celestial adventures. While it’s easy to take its steady presence for granted, …
The Moon, Earth’s …
The Moon, Earth’s closest neighbor and constant companion, has inspired countless myths, scientific discoveries, and celestial adventures. While it’s easy to take its steady presence for granted, the Moon continues to amaze us with its dynamic interactions with Earth, its influence on tides, and its role in shaping human culture. 2025: A Year of Lunar Highlights This year, the Moon takes center stage with a series of awe-inspiring celestial events. From total eclipses to planetary conjunctions, 2025 offers plenty of opportunities to witness the Moon’s brilliance and its dance wit…


Often overshadowed by its more brilliant planetary neighbors, Mercury offers a rewarding challenge for those willing to chase it during its fleeting appearances in the twilight. As the closest planet …
Often overshadowed b…
Often overshadowed by its more brilliant planetary neighbors, Mercury offers a rewarding challenge for those willing to chase it during its fleeting appearances in the twilight. As the closest planet to the Sun, Mercury never strays far from its glare, making it one of the most elusive planets to spot. But with the right timing, patience, and preparation, 2025 offers some excellent opportunities to observe the solar system's smallest and fastest-moving planet. Mercury: A Small but Mighty Wonder Mercury’s proximity to the Sun gives it a unique role in the solar system, and its rapid 8…


Watching the sky just after sunset, you may notice the brightest “star” gracing the western horizon. This celestial gem isn’t a star but Venus, the radiant second planet from the Sun, often refe…
Watching the sky jus…
Watching the sky just after sunset, you may notice the brightest “star” gracing the western horizon. This celestial gem isn’t a star but Venus, the radiant second planet from the Sun, often referred to as the “Evening Star” or “Morning Star.” Venus: Earth's Twin with a Fiery Personality Venus is the third brightest natural object in our sky, outshone only by the Sun and Moon. Its brilliance is due to its thick, reflective atmosphere, composed mainly of carbon dioxide, with clouds of sulfuric acid that bounce sunlight efficiently. Similar in size and composition to Earth…


After exploring the major planets of the solar system—Mars, Jupiter, Saturn, Uranus, and Neptune, we now venture to the fringes of the solar system to explore Pluto and the icy worlds of the Kuiper …
After exploring the …
After exploring the major planets of the solar system—Mars, Jupiter, Saturn, Uranus, and Neptune, we now venture to the fringes of the solar system to explore Pluto and the icy worlds of the Kuiper Belt. Though small and distant, these celestial bodies reveal a wealth of fascinating stories about the history and formation of our cosmic neighborhood. Pluto: The Dwarf Planet That Stole Our Hearts Pluto, once the ninth planet, has been a source of fascination and controversy since its discovery in 1930 by Clyde Tombaugh. In 2006, it was reclassified as a dwarf planet by the Internationa…


Continuing our journey through the night sky, after exploring Mars, Jupiter, Saturn, and Uranus, we arrive at Neptune—the distant blue world shrouded in mystery. Though not the easiest planet to obs…
Continuing our journ…
Continuing our journey through the night sky, after exploring Mars, Jupiter, Saturn, and Uranus, we arrive at Neptune—the distant blue world shrouded in mystery. Though not the easiest planet to observe, Neptune has fascinating features and a unique story that make it a captivating subject for any stargazer. A Discovery Guided by Math Neptune holds the distinction of being the first planet discovered through mathematics rather than direct observation. In the mid-19th century, astronomers noticed that Uranus was deviating from its expected orbit. John Couch Adams in England and Urbain…


Continuing our journey through the night sky, after exploring Mars, Jupiter, and Saturn, it’s time to turn our telescopes to Uranus—the enigmatic blue-green world with a unique tilt, fascinating m…
Continuing our journ…
Continuing our journey through the night sky, after exploring Mars, Jupiter, and Saturn, it’s time to turn our telescopes to Uranus—the enigmatic blue-green world with a unique tilt, fascinating mythology, and a quirky history. A Planet Named George? Uranus has one of the most peculiar naming stories in the solar system. Discovered in 1781 by William Herschel, it was the first planet identified with the aid of a telescope. Initially, Herschel wanted to name it "Georgium Sidus" (George's Star) in honor of King George III. While this name was well-received in Britain, it faced push…


In my recent articles on Mars and Jupiter, we explored two planets that capture the imagination for their unique features and roles in human history. Now, let’s turn our attention to Saturn—the ce…
In my recent article…
In my recent articles on Mars and Jupiter, we explored two planets that capture the imagination for their unique features and roles in human history. Now, let’s turn our attention to Saturn—the celestial showstopper with its iconic rings, fascinating moons, and rich mythology. Over the next few weeks, I’ll continue spotlighting the planets in our night sky, so stay tuned! Saturn’s Rings: Beauty on Borrowed Time Saturn’s rings are among the most iconic features in the solar system, but their days are numbered. These icy marvels, composed of particles ranging from the size …


When days grow shorter and the Rocky Mountains don a fresh coat of snow, Boulder’s winter sky truly shines. Many people shy away from stargazing in the cold, but winter nights bring some of the clea…
When days grow short…
When days grow shorter and the Rocky Mountains don a fresh coat of snow, Boulder’s winter sky truly shines. Many people shy away from stargazing in the cold, but winter nights bring some of the clearest, brightest views of the cosmos — and with the sun setting so early you don’t have to stay up until midnight to enjoy them! So, bundle up, grab a warm drink, and let’s explore why winter might just be the best stargazing season of the year. 1. Earlier Nights, Easier Evenings One obvious perk of winter astronomy is that darkness falls sooner. While summer stargazers often have to wait u…


In a recent article about Mars at opposition, I mentioned Jupiter in passing without proper introduction. To remedy this, let’s take a closer look at the largest planet in our solar system. Over the…
In a recent article …
In a recent article about Mars at opposition, I mentioned Jupiter in passing without proper introduction. To remedy this, let’s take a closer look at the largest planet in our solar system. Over the next few weeks, I’ll also be spotlighting other planets visible in the night sky, providing a comprehensive tour of our celestial neighborhood. If you missed my Mars article, you can read it here. Jupiter: The Solar System’s Behemoth Jupiter is the colossus of our solar system, boasting a diameter 11.6 times larger than Earth’s—spanning 86,881 miles. Its sheer volume could house…


In the eastern sky, there’s a bright, distinctly red point of light that emerges soon after sunset. You’ve probably guessed it—it’s Mars! This year, Mars is particularly bright for good reason…
In the eastern sky, …
In the eastern sky, there’s a bright, distinctly red point of light that emerges soon after sunset. You’ve probably guessed it—it’s Mars! This year, Mars is particularly bright for good reason. On January 16, 2025, it will reach opposition, the best time to see it in over three years. What is Opposition? Opposition happens when Mars, Earth, and the Sun align, with Earth in the middle. This means Mars rises in the east as the Sun sets in the west, staying visible all night long. During opposition, Earth is closer to Mars than at almost any other time, making the Red Planet a…


As the year winds down and holiday festivities ramp up, the night sky is preparing its own dazzling displays. December 2024 promises brilliant planetary sightings, meteor showers, and special opportun…
As the year winds do…
As the year winds down and holiday festivities ramp up, the night sky is preparing its own dazzling displays. December 2024 promises brilliant planetary sightings, meteor showers, and special opportunities to catch the Moon playing “hide and seek” with neighboring celestial bodies. Whether you’re watching from your backyard, gathering virtually with family, or venturing to a star party, you’ll find plenty of reasons to look up. This guide will help you and your loved ones connect under the same cosmic canopy—no matter where you are in the world. (Want to know more about my per…


Hey there, I'm Luke! I'm so glad you're here on About Boulder reading about my journey. As someone with a degree in astrophysics from CU and over 13 years of experience in educational astronomy, I've …
Hey there, I'm Luke!…
Hey there, I'm Luke! I'm so glad you're here on About Boulder reading about my journey. As someone with a degree in astrophysics from CU and over 13 years of experience in educational astronomy, I've been running AstroTours.org for over seven years now, sharing the wonders of the night sky with people like you. I was born in Denver, Colorado, and the Rocky Mountains' skies have amazed me my entire life. One of my father's favorite stories from my infancy is when he took me outside on a full moon night. I pointed up at the moon and said, "Ball." He chuckled and said, "Very good, Luke! That…
