Messengers from the Cosmos

Ahnighito

American Museum of Natural History in New York City

The Mystery and Majesty of Meteorites

Meteorites are among the oldest and most fascinating visitors to Earth, carrying with them secrets from the birth of the solar system. These celestial rocks are fragments from asteroids, planets, or comets that have survived a fiery passage through our atmosphere and crash-landed on Earth. For scientists, meteorites are time capsules — offering a direct glimpse into the earliest chapters of the universe’s story.

What Are Meteorites?

Meteorites are space rocks that survive their journey through Earth’s atmosphere and land on the surface. They start their lives as meteoroids, orbiting the sun. When a meteoroid enters the Earth’s atmosphere, it becomes a meteor — the streak of light often called a “shooting star.” If it doesn’t burn up completely and lands on Earth, it’s classified as a meteorite.

There are three main types:

• Stony meteorites (chondrites and achondrites) – the most common, often containing small spherical inclusions called chondrules.
  
  
• Iron meteorites – composed mostly of iron and nickel, thought to come from the cores of ancient, shattered protoplanets.
  
  
• Stony-iron meteorites – a rare blend of metal and rock, offering a unique window into planetary interiors.
  
  

How Old Are They?

Most meteorites are over 4.5 billion years old, dating back to the very formation of the solar system. Some even contain pre-solar grains, tiny particles that formed in ancient stars before our sun existed. Holding a meteorite is, quite literally, holding a piece of stardust older than Earth itself.

How Do They Form?

Meteorites are born from cosmic collisions. In the early days of the solar system, asteroids and protoplanets frequently collided, shattering and reassembling under intense heat and pressure. Some fragments were ejected into space, where they drifted for eons before encountering Earth. Others may come from the Moon or Mars — blasted off their surfaces by impacts and later falling here.

Largest Meteorite Ever Found on Earth

Hoba meteorite in Namibia

The Hoba meteorite in Namibia holds the title of the largest known meteorite — and the largest naturally occurring piece of iron known on Earth’s surface. Discovered in 1920, it weighs an estimated 60 tons (around 132,000 pounds) and has never been moved from its original site due to its sheer mass. It is composed mostly of iron and nickel and is estimated to have fallen to Earth about 80,000 years ago.

Another noteworthy mention is the Cape York meteorite in Greenland, which yielded several large fragments, including one piece called “Ahnighito,” weighing over 30 tons. It is now on display at the American Museum of Natural History in New York City.

Why Are Meteorites Important?

• Scientific Clues: Meteorites help scientists understand planetary formation, solar system history, and even the possible origins of life, as some contain amino acids — the building blocks of life.
  
  
• Cultural Significance: Many ancient cultures viewed meteorites as divine messages. Some indigenous peoples used iron from meteorites to forge tools long before smelting was discovered.
  
  
• Meteorite Markets: Today, meteorites are highly valued by collectors, scientists, and museums — some fetching thousands or even millions of dollars.
  
  

Famous Meteorite Events

• Chelyabinsk (2013) – A dramatic fireball over Russia injured over 1,000 people due to the shockwave.
  
  
• Tunguska (1908) – A massive explosion over Siberia, likely from a meteorite airburst, flattened over 800 square miles of forest.
  
  
• Allende (1969) – A carbonaceous chondrite meteorite that fell in Mexico, rich in pre-solar grains and organic compounds.
  
  

Final Thoughts

Meteorites are not just fascinating rocks; they are fragments of our cosmic ancestry. They remind us that we live in a dynamic universe, filled with mystery, wonder, and the occasional visitor from the stars. Whether displayed in a museum or cradled in the palm of a curious child, each meteorite is a silent witness to the dawn of time.

As Carl Sagan once said, “We are made of star stuff.” And meteorites, in their fiery descent and silent fall, are proof of that eternal truth.

How to Maintain Your VO₂ Max as You Age

In the world of endurance and performance, VO₂ max is often treated like a badge of honor. It’s the measure of your body’s ability to use oxygen during intense exercise—essentially, how strong your internal engine is. But it’s important to remember that VO₂ max is not a fixed number. Like strength or flexibility, it’s something you can improve and maintain with consistent effort. And more importantly, don’t stress if your number isn’t as high as you hoped. The good news? You have plenty of tools to keep your VO₂ max strong for years to come.

Here are three smart and sustainable ways to maintain—or even boost—your VO₂ max as you age:

1. Diversify Your Training

One of the easiest ways to hit a plateau is by doing the same workout over and over. Your body adapts quickly, and without new challenges, progress slows. That’s why it’s crucial to mix things up:

• Interval training: Push your heart rate up with short bursts of speed.
  
  
• Hill repeats: These naturally build strength and aerobic capacity.
  
  
• Strength training: Lifting weights supports muscle health, which in turn supports cardiovascular function.
  
  

A varied routine keeps both your muscles and your cardiovascular system on their toes—and your VO₂ max rising.

2. Don’t Skip Zone 2 Runs

While high-intensity workouts get a lot of the attention, zone 2 runs—the easier, conversational-paced efforts—are the quiet heroes. These low-intensity sessions help your body:

• Build more mitochondria (the energy powerhouses in your cells)
  
  
• Improve capillary density (helping oxygen delivery)
  
  
• Increase fat metabolism
  
  

Together, these adaptations enhance your endurance and keep your “engine” efficient and strong.

3. Follow the 80/20 Rule

According to many top endurance coaches and researchers, the sweet spot for training is spending:

• 80% of your time in low-intensity (zone 2) workouts
  
  
• 20% in higher-intensity efforts
  
  

This balance allows for consistent aerobic development without burning out or risking injury from constant hard training. It’s a principle used by elite athletes and recreational runners alike.

Keep Moving—Always

Dr. Todd Buckingham, exercise physiologist and visiting professor at Grand Valley State University, puts it simply:

“We don’t stop exercising because we get old. We get old because we stop exercising.”

The key takeaway? VO₂ max doesn’t have to decline dramatically with age—as long as you stay active. It’s never too late to train wisely, move regularly, and enjoy the health and performance benefits that come with maintaining a strong cardiovascular base.

Final Thoughts

Your VO₂ max is a dynamic reflection of your overall fitness. With intentional variety, steady low-intensity training, and consistent effort, you can keep your VO₂ max levels high—and your vitality even higher—for decades to come. Keep showing up, keep moving, and let your training carry you into every new season of life with strength.

Salvador Dalí’s Vision of the Eternal Eucharist

 

The Sacrament of the Last Supper

In 1955, Salvador Dalí—a surrealist once famed for melting clocks and dreamlike landscapes—startled the art world by unveiling a monumental painting rooted not in shock or surrealism, but in reverence and restraint. The Sacrament of the Last Supper, now housed at the National Gallery of Art in Washington, D.C., stands apart from most of Dalí’s oeuvre. Gone are the melting forms and Freudian fragments. In their place, Dalí offers a serene vision of divine mystery—timeless, mathematical, and deeply spiritual.

This nine-foot canvas is more than a depiction of the biblical meal in an upper room—it is a cosmic meditation on the Eucharist, infused with symbolism and a renewed embrace of classical ideals. Christ, rendered with striking serenity, sits at the center of the table, surrounded not by twelve distinct apostles but by twelve idealized figures, mirrored symmetrically, each one faceless and absorbed in prayer. The traditional drama of betrayal and farewell is replaced with stillness, light, and transcendence.

Dalí anchors the scene in the real world with the unmistakable landscape of Port Lligat—his coastal retreat in northeastern Catalonia. The craggy cliffs and serene waters, rendered with photographic clarity, form a natural window behind the table. This is no imaginary backdrop but an intimate and deeply personal setting, one that had long nourished Dalí’s imagination. Yet even as the earthly setting grounds the composition, the structure enclosing it lifts the scene into the realm of the symbolic and metaphysical.

Surrounding Christ and the twelve figures is a vast, translucent geometric form—a dodecahedron, the twelve-sided Platonic solid historically associated with the heavens. For ancient philosophers like Pythagoras and later Renaissance thinkers, the dodecahedron symbolized the perfection and mystery of the cosmos. Dalí appropriates this symbol not merely as an architectural curiosity but as a sacred vessel, embodying divine order and transcendence.

His own words make the connection explicit: “I wanted to materialize the maximum of luminous and Pythagorean instantaneousness based on the celestial communion of the number twelve.” Here, Dalí elevates the concept of communion beyond the historical Last Supper and into an eternal, cosmic frame. The number twelve becomes the scaffolding of the universe—twelve hours in a day, twelve months in a year, twelve signs circling the zodiac, twelve apostles seated around their Lord. Through this numerical harmony, Dalí speaks to a divine symmetry that permeates all creation.

In this way, the dodecahedron becomes both sanctuary and symbol—a heavenly tabernacle that shelters the mystery of the Eucharist. The scene is at once deeply rooted in a familiar, tangible world and yet suffused with otherworldly order. The effect is to pull the viewer into a moment suspended between time and eternity, where the spiritual and the material, the seen and the unseen, meet in sacred stillness.

Above Christ, a youthful, ethereal figure with arms outstretched—perhaps Christ resurrected, perhaps the image of God—hovers with subtle glory. There are no wounds, no crown of thorns. Instead, Dalí portrays the divine not through suffering but through symmetry, beauty, and light. The bread and wine on the table become the most tangible presence of Christ’s body, anchoring the scene in the sacramental act of communion.

Dalí’s own spiritual journey had taken a turn in the late 1940s. Marked by the trauma of the Spanish Civil War, the devastation of World War II, and his meeting with Sigmund Freud, Dalí turned toward Catholic mysticism and classical balance. He cited influences from Zurbarán’s austere spirituality to the mathematical harmony of the Italian Renaissance.

When art collector Chester Dale saw the finished work, he immediately purchased it and gifted it to the National Gallery. It was first displayed on Easter Eve 1956, drawing over 7,000 visitors on its first day alone. Dale called it “a picture for all time,” and indeed, it is.

In The Sacrament of the Last Supper, Dalí invites viewers into a quiet, contemplative space—one where heaven meets earth, where geometry dances with mystery, and where Christ’s presence is both unveiled and veiled. As Dalí once said, “Heaven is to be found exactly in the center of the bosom of the man who has faith.” This painting is a vision of that center—timeless, ordered, luminous.