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Why can’t it always be summer? It’s all about the Earth’s tilt
Earth’s axial tilt causes the seasons. As Earth orbits the Sun, different hemispheres tilt toward or away, creating summer and winter depending on location.
Stephanie Spera, University of Richmond
Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.
Why can’t it always be summer? – Amanda, age 5, Chile
With its long days just itching to be spent by water doing nothing, summer really can be an enchanting season. As Jenny Han wrote in the young adult novel “The Summer I Turned Pretty”: “Everything good, everything magical happens between the months of June and August.”
But all good things must come to an end, and summer cannot last forever. There’s both a simple reason and a more complicated one. The simple reason is that it can’t always be summer because the Earth is tilted. The more complicated answer requires some geometry.
I’m a professor of geography and the environment who has studied seasonal changes on the landscape. Here’s what seasons have to do with our planet’s position as it moves through the solar system.
This animation shows why the Earth has seasons.
Closeness to the Sun doesn’t explain seasons
First, you need to know that the Earth is a sphere – technically, an oblate spheroid. That means Earth has a round shape a little wider than it is tall.
Every year, Earth travels in its orbit to make one revolution around the Sun. The Earth’s orbit is an ellipse, which is more like an oval than a circle. So there are times when Earth is closer to the Sun and times when it’s farther away.
A lot of people assume this distance is why we have seasons. But these people would be wrong. In the United States, the Earth is 3 million miles closer to the Sun during winter than in the summer.
Spinning like a top
Now picture an imaginary line across Earth, right in the middle, at 0° latitude. This line is called the equator. If you drew it on a globe, the equator would pass through countries including Brazil, Kenya, Indonesia and Ecuador.
Everything north of the equator, including the United States, is considered the Northern Hemisphere, and everything south of the equator is the Southern Hemisphere.
Now think of the Earth’s axis as another imaginary line that runs vertically through the middle of the Earth, going from the North Pole to the South Pole.
As it orbits, or revolves, around the Sun, the Earth also rotates. That means it spins on its axis, like a top. The Earth takes one full year to revolve around the Sun and takes 24 hours, or one day, to do one full rotation on its axis.
This axis is why we have day and night; during the day, we’re facing the Sun, and at night, we’re facing away.
But the Earth’s axis does not go directly up and down. Instead, its axis is always tilted at 23.5 degrees in the exact same direction, toward the North Star.
The Earth’s axis is tilted due to a giant object – perhaps an ancient planet – smashing into it billions of years ago. And it’s this tilt that causes seasons.
It’s all about the tilt
So that means in June, the Northern Hemisphere is tilted toward the Sun. That tilt means more sunlight, more solar energy, longer days – all the things that make summer, well, summer.
At the same time, the Southern Hemisphere is tilted away from the Sun. So countries such as Australia, Chile and Argentina are experiencing winter then.
To say it another way: As the Earth moves around the Sun throughout the year, the parts of the Earth getting the most sunlight are always changing.
Fast-forward to December, and Earth is on the exact opposite side of its orbit as where it was in June. It’s the Southern Hemisphere’s turn to be tilted toward the Sun, which means its summer happens in December, January and February.
If Earth were not tilted at all, there would be no seasons. If it were tilted more than it is, there would be even more extreme seasons and drastic swings in temperature. Summers would be hotter and winters would be colder.
Defining summer
Talk to a meteorologist, climate scientist or author Jenny Han, and they’ll tell you that for those of us in the Northern Hemisphere, summer is June, July and August, the warmest months of the year.
But there’s another way to define summer. Talk to astronomers, and they’ll tell you the first day of summer is the summer solstice – the day of the year with the longest amount of daylight and shortest amount of darkness.
The summer solstice occurs every year sometime between June 20 and June 22. And every day after, until the winter solstice in December, the Northern Hemisphere receives a little less daylight.
Summer officially ends on the autumnal equinox, the fall day when everywhere on Earth has an equal amount of daylight and night. The autumnal equinox happens every year on either September 22 or 23.
But whether you view summer like Jenny Han or like an astronomer, one thing is certain: Either way, summer must come to an end. But the season and the magic it brings with it will be back before you know it.
Hello, curious kids! Do you have a question you’d like an expert to answer? Ask an adult to send your question to CuriousKidsUS@theconversation.com. Please tell us your name, age and the city where you live.
And since curiosity has no age limit – adults, let us know what you’re wondering, too. We won’t be able to answer every question, but we will do our best.
Stephanie Spera, Assistant Professor of Geography and the Environment, University of Richmond
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Former President Barack Obama recently sparked headlines, social media debates, and a fresh wave of UFO chatter after a brief remark during a podcast interview. The comment quickly ricocheted across news outlets, with many asking: Did Obama just confirm aliens exist? And just as quickly, Donald Trump weighed in.
Let’s unpack what was actually said — and what it means.
🎙️ The Comment That Ignited the Conversation
During a rapid-fire question segment on a podcast hosted by Brian Tyler Cohen, Obama was asked directly:
“Are aliens real?”
Obama’s response:
“They’re real, but I haven’t seen them.”
That short answer fueled immediate speculation. Clips spread online, often stripped of context, with some interpreting the statement as a bombshell confirmation of extraterrestrial life.
🧠 What Obama Meant
Soon after the comment gained traction, Obama clarified his meaning.
His explanation aligned with a position he’s expressed before:
✔ He was referring to the statistical likelihood of life elsewhere in the universe
✔ He was not claiming evidence of alien visitation
✔ He emphasized that during his presidency he saw no proof of extraterrestrial contact
In other words:
Obama was speaking philosophically and scientifically — not revealing classified information.
This interpretation matches mainstream scientific thinking: given the size of the universe, life beyond Earth is plausible, but confirmed evidence remains elusive.
🛸 Why the Comment Resonated
The remark landed in a cultural moment where:
• Interest in UAPs (Unidentified Aerial Phenomena) is high
• Government transparency around UFO reports has increased
• Space exploration discoveries (exoplanets, water worlds) dominate science news
Even a casual statement from a former president can ignite intense discussion.
🇺🇸 Trump’s Reaction
Former (and current political figure) Donald Trump responded critically.
Trump characterized Obama’s comment as:
• A “mistake”
• Potentially involving “classified information”
He also reiterated his own stance:
He does not know whether aliens are real.
Trump pivoted the conversation toward disclosure, suggesting he would support or consider declassifying UFO/UAP-related files — a theme that has periodically surfaced in political rhetoric.
⚖️ Politics vs Interpretation
Trump’s reaction highlights how statements about extraterrestrial life often become political flashpoints, even when the original comment is speculative or philosophical.
Key distinction:Obama’s Clarification Public Interpretation Life elsewhere is likely “Obama confirmed aliens” No evidence of contact “Government disclosure”
🔬 The Scientific Reality
Organizations like NASA and the broader research community maintain:
✅ Life beyond Earth → statistically plausible
❓ Intelligent civilizations → unknown
❌ Confirmed alien contact → no verified evidence
Investigations into UAPs consistently conclude:
• Most sightings have conventional explanations
• Some remain unresolved due to limited data
• None confirmed as extraterrestrial craft
🌌 Why These Stories Keep Captivating Us
Conversations about aliens sit at the intersection of:
✨ Science
🧠 Curiosity
🛸 Mystery
🎭 Pop culture
🏛️ Politics
When a former president comments, the intrigue multiplies.
📌 Bottom Line
Did Obama say aliens are real?
Yes — but in the sense that life elsewhere in the universe is likely, not that aliens are visiting Earth.
Did he claim evidence?
No.
Trump’s response?
Critical, skeptical, and framed around classification and disclosure.
If you’re fascinated by this topic, you might also enjoy exploring:
• How scientists search for alien life
• What counts as real “evidence”
• Why UFO sightings are so often misinterpreted
Want me to craft a follow-up article like “How Close Are We to Discovering Alien Life?” 🚀👽
Related Links & Further Reading
- NASA – Search for Life
- NASA – Exoplanet Exploration
- SETI Institute – Search for Extraterrestrial Intelligence
- U.S. Department of Defense – UAP Reports
- How Close Are We to Discovering Alien Life?
- What Are UAPs? Explained
- A Brief History of UFO Investigations
Dive into “The Knowledge,” where curiosity meets clarity. This playlist, in collaboration with STMDailyNews.com, is designed for viewers who value historical accuracy and insightful learning. Our short videos, ranging from 30 seconds to a minute and a half, make complex subjects easy to grasp in no time. Covering everything from historical events to contemporary processes and entertainment, “The Knowledge” bridges the past with the present. In a world where information is abundant yet often misused, our series aims to guide you through the noise, preserving vital knowledge and truths that shape our lives today. Perfect for curious minds eager to discover the ‘why’ and ‘how’ of everything around us. Subscribe and join in as we explore the facts that matter. https://stmdailynews.com/the-knowledge/
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The Long Track Back
Why Downtown Los Angeles Feels Small Compared to Other Cities
Downtown Los Angeles often feels “small” compared to other U.S. cities, but that’s only part of the story. With some of the tallest buildings west of the Mississippi and skyline clusters spread across the region, LA’s downtown reflects the city’s unique polycentric identity—one that, if combined, could form a true mega downtown.
Last Updated on February 18, 2026 by Daily News Staff
Panorama of Los Angeles from Mount Hollywood – California, United States
When people think of major American cities, they often imagine a bustling, concentrated downtown core filled with skyscrapers. New York has Manhattan, Chicago has the Loop, San Francisco has its Financial District. Los Angeles, by contrast, often leaves visitors surprised: “Is this really downtown?”
The answer is yes—and no.
Downtown LA in Context
Compared to other major cities, Downtown Los Angeles (DTLA) is relatively small as a central business district. For much of the 20th century, strict height restrictions capped most buildings under 150 feet, while cities like Chicago and New York were erecting early skyscrapers. LA’s skyline didn’t really begin to climb until the late 1960s.
But history alone doesn’t explain why DTLA feels different. The real story lies in how Los Angeles grew: not as one unified city center, but as a collection of many hubs.
Downtown Los Angeles
A Polycentric City
Los Angeles is famously decentralized. Hollywood developed around the film industry. Century City rose on former studio land as a business hub. Burbank became a studio and aerospace center. Long Beach grew around the port. The Wilshire Corridor filled with office towers and condos.
Unlike other cities where downtown is the place for work, culture, and finance, Los Angeles spread its energy outward. Freeways and car culture made it easy for businesses and residents to operate outside of downtown. The result is a polycentric metropolis, with multiple “downtowns” rather than one dominant core.
A Resident’s Perspective
As someone who lived in Los Angeles for 28 years, I see DTLA differently. While some outsiders describe it as “small,” the reality is that Downtown Los Angeles is still significant. It has some of the tallest buildings west of the Mississippi River, including the Wilshire Grand Center and the U.S. Bank Tower. Over the last two decades, adaptive reuse projects have transformed old office buildings into lofts, while developments like LA Live, Crypto.com Arena, and the Broad Museum have revitalized the area.
In other words, DTLA is large enough—it just plays a different role than downtowns in other American cities.
View of Westwood, Century City, Beverly Hills, and the Wilshire Corridor.
The “Mega Downtown” That Isn’t
A friend once put it to me with a bit of imagination: “If you could magically pick up all of LA’s skyline clusters—Downtown, Century City, Hollywood, the Wilshire Corridor—and drop them together in one spot, you’d have a mega downtown.”
He’s right. Los Angeles doesn’t lack tall buildings or urban energy—it just spreads them out over a vast area, reflecting the city’s unique history, geography, and culture.
A Downtown That Fits Its City
So, is Downtown LA “small”? Compared to Manhattan or Chicago’s Loop, yes. But judged on its own terms, DTLA is a vibrant hub within a much larger, decentralized metropolis. It’s a downtown that reflects Los Angeles itself: sprawling, diverse, and impossible to fit neatly into the mold of other American cities.
🔗 Related Links
Dive into “The Knowledge,” where curiosity meets clarity. This playlist, in collaboration with STMDailyNews.com, is designed for viewers who value historical accuracy and insightful learning. Our short videos, ranging from 30 seconds to a minute and a half, make complex subjects easy to grasp in no time. Covering everything from historical events to contemporary processes and entertainment, “The Knowledge” bridges the past with the present. In a world where information is abundant yet often misused, our series aims to guide you through the noise, preserving vital knowledge and truths that shape our lives today. Perfect for curious minds eager to discover the ‘why’ and ‘how’ of everything around us. Subscribe and join in as we explore the facts that matter. https://stmdailynews.com/the-knowledge/
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The Knowledge
Century City: From Hollywood Backlot to Business Hub
Century City, originally part of 20th Century Fox’s backlot, transformed into a prominent business district in Los Angeles during the 1950s amid the decline of cinema. Developer William Zeckendorf envisioned a mixed-use urban center, leading to iconic skyscrapers and establishing the area as a hub for law, finance, and media, blending Hollywood history with modern business.
Before Century City became one of Los Angeles’ premier business districts, it was part of 20th Century Fox’s sprawling backlot, used for filming movies and housing studio operations. By the 1950s, as television rose and movie attendance declined, 20th Century Fox faced financial challenges and decided to sell a portion of its land.
Developer William Zeckendorf envisioned a “city within a city”—a modern, mixed-use urban center with office towers, hotels, and entertainment facilities. Branded Century City, the name paid homage to its studio roots while symbolizing LA’s vision for the future.
The first skyscrapers, including the Gateway West Building, set the tone for the district’s sleek, futuristic skyline. Architects like Welton Becket and Minoru Yamasaki helped shape Century City’s iconic look. Over time, it evolved from Hollywood’s backlot to a corporate and legal hub, attracting law firms, financial institutions, and media companies.
Today, Century City stands as a testament to Los Angeles’ postwar optimism, westward expansion, and multi-centered urban growth—a unique blend of Hollywood history and modern business.
Related STM Daily News Links:
- The Evolution of Los Angeles Public Transportation
- Why Los Angeles Grew Into a Sprawling City
- Downtown Los Angeles: Past, Present, and Future
Dive into “The Knowledge,” where curiosity meets clarity. This playlist, in collaboration with STMDailyNews.com, is designed for viewers who value historical accuracy and insightful learning. Our short videos, ranging from 30 seconds to a minute and a half, make complex subjects easy to grasp in no time. Covering everything from historical events to contemporary processes and entertainment, “The Knowledge” bridges the past with the present. In a world where information is abundant yet often misused, our series aims to guide you through the noise, preserving vital knowledge and truths that shape our lives today. Perfect for curious minds eager to discover the ‘why’ and ‘how’ of everything around us. Subscribe and join in as we explore the facts that matter. https://stmdailynews.com/the-knowledge/
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