Science
What is most likely going on in Area 51? A national security historian explains why you won’t find aliens there
Christopher Nichols, The Ohio State University
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.
What is most likely going on in Area 51? – Griffin, age 10, South Lyon, Michigan
One of the reasons people can never be entirely sure about what is going on at Area 51 is that it is a highly classified secret military facility. It was not until 2013 that the U.S. government even acknowledged the existence and name “Area 51.”
This information came out as part of a broader set of documents released through a Freedom of Information Act request, which is something regular citizens and groups can do to ask the U.S. government to provide details about government activities. In this case, the request made public formerly classified CIA information regarding the historical development and testing of the U-2 spy plane. The information also revealed where it was tested: Area 51!
As a national security historian, I know there’s a long history of secrets at Area 51. I also know that none of those secrets have anything to do with space aliens.
The place
The base commonly referred to as Area 51 is located in a remote area of southern Nevada, roughly 100 miles (161 kilometers) from Las Vegas. It is in the middle of a federally protected area of the U.S. Air Force’s Nevada Test and Training Range, now known as the Nevada National Security Site, which is inside the larger Nellis Air Force Range.
Area 51 is the name on maps for the area within the Nevada National Security Site where the government carried out secret operations. The airfield at Area 51 is called Homey Airport, and the overall facility is often referred to as Groom Lake. Groom Lake is a salt flat, or dried-out lake, adjacent to the airport.
The history
In the early years of the Cold War between the United States and the Soviet Union, both nations sought new technological developments that might give one country more power than the other. A great amount of information about scientific achievements, such as on rockets or weapons – but also even on ways to grow more food or make fuel more efficient – was kept secret as an issue of national security.
A key part of not fighting another world war was, and still is, developing technologies to see what the other side is doing – that is, surveillance technologies that can spy on the enemy. The information gathered by new and improved surveillance technologies about new innovations with planes and weapons was very important to governments.
This meant that both the surveillance information and the technology to get it were closely held national security secrets. Very few people in the governments of the U.S. and Soviet Union knew about the secrets from the 1940s all the way up until the end of the Cold War in 1991.
Central to all this was the U.S.’s U-2 spy plane. It could fly higher than other airplanes and was made to travel over targets all around the world to take high-resolution photographs and measurements. Area 51 was selected in 1955 to test the U-2 in part because its remote location could help keep the plane secret.
Area 51 became the test site for other secret new aircraft. This included the A-12, which, like the U-2, was a fast-flying reconnaissance plane. The A-12 was first test flown at Homey Airport in 1962. It had a bulging disc-like center to carry additional fuel. Its shape and shiny titanium body could well have been responsible for some people’s reports about seeing spherical ships, also known as flying saucers.
Another important – and odd-shaped – aircraft first tested at Area 51 was the stealth fighter known as the F-117. It first flew at Homey Airport in 1981.
Secrets and speculation
“More Flying Objects Seen in Clark Sky,” read the June 17, 1959, headline in the Reno Evening Gazette newspaper. Reports like this of unidentified flying objects in the 1950s and 1960s fueled controversy and attention for Area 51. This was for three main reasons:
- Area 51 was highly secret and not publicly accessible.
- The area was home to test flights of secret new airplanes that moved fast and in different ways than expected.
- The Cold War was an era of political tension, and there were many movies and TV shows about space aliens at the time.
When the government does not tell the public the full truth, no matter the reasons, secrets can lead to wild speculation. Secrecy can leave room for conspiracy theories to develop.
Area 51 remains off-limits to civilian and regular military air traffic, a decade after the government acknowledged its existence. The 68 years of government secrecy has helped to amplify suspicions, speculation and conspiracy theories. These conspiracy theories include crashed alien spaceships, space aliens being experimented on, and even space aliens working at Area 51.
There are much simpler explanations for what witnesses have seen near Area 51. After all, the public now knows about what was being tested at Area 51, and when. For example, as U-2 and A-12 flights increased in the 1950s and 1960s, so did local sightings of UFOs. As balloons and planes crashed, and secret testing of new technologies as well as captured Soviet equipment continued, so did reports of UFO crashes and landings.
In fact, many UFO sightings match almost exactly with dates and times of flights of then-classified experimental aircraft. We also know that prototype drones and more recent versions have been tested at the site.
In the end, there is no reason to think that anything other than earthly technologies have been behind the strange sights and sounds at Area 51.
This article has been updated to correct the descriptions of the name Area 51 and the U2 spy plane’s capabilities.
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Christopher Nichols, Professor of History, The Ohio State University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Science
Sonic booms from meteors can release the energy of hundreds of tons of TNT – here’s how they work
Shawn Laatsch, University of Maine
Sonic booms from meteors can release the energy of hundreds of tons of TNT – here’s how they work
As humans, we live out our lives on a planet that is constantly sweeping through a cosmic ocean littered with ancient debris from the formation of the solar system. For the most part, our world glides silently through space, shielded by Earth’s thin atmosphere.
Occasionally, however, the rest of the universe reminds us of its presence with stunning, visceral clarity.
Residents along the Massachusetts–New Hampshire border were startled by a sudden sonic boom on the afternoon of May 30, 2026. A large number of people up and down the Eastern Seaboard witnessed it.
After NASA analyzed imagery from weather satellites, they identified the culprit as a small meteor measuring roughly 3 to 5 feet (1 to 2 meters) across. It was screaming through space at an astonishing 42,000 miles per hour (68,000 kilometers per hour) when it plunged into Earth’s upper atmosphere.
Friction between the meteor and the increasingly dense air quickly turned the kinetic energy of the rock shooting through the sky into blistering heat. At an altitude of roughly 40 miles (60 kilometers), the immense heat and pressure overcame the structural integrity of the meteor, causing it to fragment in a brilliant flash.
The breakup released a staggering burst of energy equivalent to 300 tons of TNT. When an object travels through the air at speeds faster than sound, which is 761 mph (1,225 kph), it creates a shock wave creating a thunderous clap, or sonic boom. While the majority of the rock vaporized, the remaining fragments rained down harmlessly into the waters of Cape Cod Bay.
In the past, such an event might have passed as an unverified sighting in the daytime sky. Today, however, our planet is wired with an accidental network of planetary defense sensors: dashboard cameras, security systems and digital doorbells.
Because meteor entries like this one last only a few fleeting seconds, they were easily missed in the past. Now, our collective digital eyes capture these spontaneous cosmic intrusions almost instantly, bringing the universe directly into our daily news feeds. While dramatic, these events are more common than most people imagine.
As someone who has worked as a planetarium director and astronomy educator for over four decades, I often get emails, social media messages and phone calls about such objects and sightings. While hearing a sonic boom can be a bit unsettling or even shocking, it reminds us we live in an active universe and may want to occasionally look up instead of down at our devices.
A meteoric spring
The Cape Cod fireball was the latest sighting in an active season of meteoritic arrivals. Just months earlier, the solar system seemed to be sending a parade of rocky objects down to Earth.
From March 8-11, observers in Northern Europe witnessed large, slow-moving fireballs in their skies. Enthusiasts and scientists successfully recovered several fragments. Lab analysis of these specimens revealed their place in a fascinating lineage – scientists determined that they had originated from Vesta, a massive, pristine asteroid orbiting between Mars and Jupiter.
On March 17, a 7-ton asteroid measuring roughly 6 feet across entered the atmosphere directly over Lake Erie. Traveling at 45,000 mph (72,400 kph), it generated a brilliant daytime flash and a powerful sonic boom, unloading an energy equivalent to 250 tons of TNT. NASA scientists published data about its trajectory, allowing meteorite hunters to recover pristine fragments in Valley City, just a short drive from Cleveland, Ohio.
Only four days later, on March 21, another cosmic fragment blazed across the skies of Texas. This object was about 3 feet wide, and it traveled at 35,000 mph (56,300 kph), releasing the energy of roughly 26 tons of TNT.
Outside of Houston, homeowner Sherri James was startled by a sudden crash, only to discover a 6-inch (15-cm) hole in her roof and a small piece of the solar system resting on her floor.
Thank goodness for Earth’s atmospheric shield
The benchmark for modern atmospheric impacts is the Chelyabinsk meteor, which exploded over Russia on Feb. 15, 2013.
That object was significantly larger than any of the meteors researchers have observed in 2026, measuring 60 feet (18 m) across and weighing roughly 10,000 tons. When it shattered 18 miles (29 km) above the ground, it produced an airburst with an explosive force 30 times greater than the Hiroshima atomic bomb.
The resulting shock wave shattered glass across hundreds of square miles, injuring nearly 1,500 people and registering as a seismic event between 2.7 and 3.7 on the Richter scale. The incident was a stark reminder that while Earth’s atmosphere is an incredibly effective shield, absorbing the lion’s share of cosmic impacts, a large enough kinetic punch can still reach the surface below.
Despite the dramatic stories around these meteor impacts, history shows that the cosmic lottery rarely targets humans directly. In all of recorded history, there is only one universally confirmed case of a person being directly struck by a space rock.
In 1954, an 8.5-pound (3.8 kg) meteorite crashed through the roof of a house in Sylacauga, Alabama, ricocheted off a heavy wooden radio and struck a sleeping woman named Ann Hodges. Though it left a severe bruise on her hip, the radio absorbed the brunt of the impact. Had it not been for the radio, there is a chance she could have been seriously injured or killed by this object.
Living with the cosmos
So, are you in any imminent danger from meteors? The mathematics of the cosmos provide profound reassurance. The statistical odds of being struck by a meteorite are vanishingly small. You stand a better chance of winning a multimillion-dollar lottery jackpot 10 times in a row than ever being hit by a meteorite.
The vast majority of the tons of space debris that bombard Earth daily arrive as harmless dust grains, burning up as elegant meteors or shooting stars. But when the larger pieces do break through and land on our planet, they offer a rare, tangible connection to the beginning of the solar system.
If you ever happen to witness one of these magnificent fireballs ripping open the sky, consider reporting your observation to the American Meteor Society. The organization keeps track of sightings and falls from around the globe. Recovered fragments provide a way for scientists to gain valuable information about the origin of our solar system, and of our home planet.
Shawn Laatsch, Director of the Versant Power Astronomy Center, University of Maine
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Last Updated on June 12, 2026 by Rod Washington
Valerie Thomas is a true pioneer in the world of science and technology. A NASA engineer and physicist, she is best known for inventing the illusion transmitter, a groundbreaking device that creates 3D images using concave mirrors. This invention laid the foundation for modern 3D imaging and virtual reality technologies.
Beyond her inventions, Thomas broke barriers as an African American woman in STEM, mentoring countless young scientists and advocating for diversity in science and engineering. Her work at NASA’s Goddard Space Flight Center helped advance satellite technology and data visualization, making her contributions both innovative and enduring.
In our latest short video, we highlight Valerie Thomas’ remarkable journey—from her early passion for science to her groundbreaking work at NASA. Watch and be inspired by a true STEM pioneer whose legacy continues to shape the future of space and technology.
🎥 Watch the video here: https://youtu.be/P5XTgpcAoHw
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Automotive
The Road to Cleaner Water: How to Prevent Roads from Polluting Waterways
Everyone loves driving on clean highways and spotless local roads. Few people, however, realize the benefits of clean roads go well beyond mere aesthetics. Cleaner roads also mean cleaner and healthier local rivers, lakes and beaches. Follow these simple year-round tips to help make the waters as fun and healthy as possible this summer.
(Feature Impact) Everyone loves driving on clean highways and spotless local roads. Few people, however, realize the benefits of clean roads go well beyond mere aesthetics. Cleaner roads also mean cleaner and healthier local rivers, lakes and beaches.
That’s because harmful pollutants in local waters often run off untreated from highways and roads during strong storms. Those rains sweep trash, dripped oil, harmful chemicals and even dangerous bacteria from pet waste into local waters via stormways and sewers. This untreated runoff can affect people’s health, make water unsafe for swimming and harm aquatic life. Every year, such man-made “stormwater pollution” even closes portions of recreational rivers and beaches.
It’s up to everyone to help prevent human-caused stormwater pollution. Don’t wait for rain in the forecast to get started. Instead, follow these simple year-round tips from the experts at the California Department of Transportation to help make the cooling waters in California and beyond as fun and healthy as possible this summer.
Trash-Free Trips and Responsible Car Care
Summer can mean more road time traveling to your next adventure. Loose items in truck beds and on roof carriers or trash tossed from car windows can quickly become the next wave of stormwater pollution flowing into local waters. To reduce:
- Secure Your Load: Always securely tarp and tie down anything in a truck bed or on a roof rack. Items falling off vehicles are both a safety hazard and can become roadside debris.
- Keep a Car Trash Catcher: Designate a bag or container in your car for food wrappers, coffee cups and other small trash until you can dispose of it properly.
- Wash Smart: Commercial car washes that recycle water are superior for preventing road dirt and chemicals accumulated on your car from entering storm drains compared to washing in a driveway. If washing at home, do it on your lawn or a permeable surface where the water naturally filters into the ground and not street gutters.
Outdoor Adventures That Leave Only Footprints
Whether you’re hiking a mountain trail, picnicking at the park or relaxing on the beach, remember the outdoor golden rule: pack out everything you pack in. Food wrappers, plastic bottles and even seemingly small items like bottle caps and cigarette butts are some of the most common litter found in parks, waterways and along coastlines. When left behind, they’re not just eyesores; they’re prime candidates for being washed into waterways.
- Pro Tip: Choose reusable water bottles that clip onto bags to reduce pollution from discarded plastic bottles.
At Home and In Your Neighborhood
Even close to home, your actions can make a difference.
- Garden Care: When tidying up your garden or front lawn, sweep leaves and grass clippings into your green bin instead of hosing them down the driveway. Hosing yard waste into road gutters can clog storm drains and cause flooding.
- Pesticide Prevention: To protect waterways from harmful chemical runoff, opt for organic or eco-friendly alternatives for pest and weed control whenever possible.
- Scoop the Poop: Pet waste contains harmful bacteria that can contaminate waterways. In fact, the EPA estimates that just two days’ worth of waste from 100 dogs can produce enough bacteria to close a beach. Always pick up after your pets, especially when walking in your neighborhood or parks, and dispose of it in a trash bin.
Pollution in waterways doesn’t just look bad; it creates real problems, from harming wildlife and ecosystems to causing potential health issues for humans and pets who encounter contaminated water. The cleaner roads and surrounding areas are, the healthier rivers, lakes and beaches become. For more tips and resources, visit CleanWaterCA.com to ensure a clean, healthy summer for everyone.
Photos courtesy of Shutterstock
SOURCE:
California Department of Transportation
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