Since humans launched Sputnik 1 in 1957, we have polluted the once-empty space around Earth to the point that it is now becoming dangerous, according to former NASA scientist Donald Kessler.
“We’re at what we call a ‘critical density’ — where there are enough large objects in space that they will collide with one another and create small debris faster than it can be removed,” Kessler recently told Marketplace.
For nearly 20 years, Kessler (who was retired until very recently) lead NASA’s Orbital Debris Program Office, which keeps track of all the growing clutter around Earth.
He predicts that eventually, there will be so much space junk that leaving Earth to explore deep-space will be impossible. That includes sending satellites to distant stretches of the solar system, like Pluto, and manned-missions to Mars.
Something must be done, he says. So he’s come out of retirement to help find a solution.
Recent News
New Research Reveals That Your Sense of Smell May Be Smarter Than You Think
A new study published in the Journal of Neuroscience indicates that the sense of smell is significantly influenced by cues from other senses, whereas the senses of sight and hearing are [...]
Deadly bacteria show thirst for human blood: the phenomenon of bacterial vampirism
Some of the world's deadliest bacteria seek out and feed on human blood, a newly-discovered phenomenon researchers are calling "bacterial vampirism." A team led by Washington State University researchers [...]
Organ Architects: The Remarkable Cells Shaping Our Development
Finding your way through the winding streets of certain cities can be a real challenge without a map. To orient ourselves, we rely on a variety of information, including [...]
Novel hydrogel removes microplastics from water
Microplastics pose a great threat to human health. These tiny plastic debris can enter our bodies through the water we drink and increase the risk of illnesses. They are [...]
Researchers Discover New Origin of Deep Brain Waves
Understanding hippocampal activity could improve sleep and cognition therapies. Researchers from the University of California, Irvine’s biomedical engineering department have discovered a new origin for two essential brain waves—slow waves and [...]
The Lifelong Cost of Surviving COVID: Scientists Uncover Long-Term Effects
Many of the individuals released to long-term acute care facilities suffered from conditions that lasted for over a year. Researchers at UC San Francisco studied COVID-19 patients in the United States who survived [...]
Previously Unknown Rogue Immune Key to Chronic Viral Infections Discovered
Scientists discovered a previously unidentified rogue immune cell linked to poor antibody responses in chronic viral infections. Australian researchers have discovered a previously unknown rogue immune cell that can [...]
Nature’s Betrayal: Unmasking Lead Lurking in Herbal Medicine
A case of lead poisoning due to Ayurvedic medicine use demonstrates the importance of patient history in diagnosis and the need for public health collaboration to prevent similar risks. [...]
Frozen in Time: How a DNA Anomaly Misled Scientists for Centuries
An enormous meteor spelled doom for most dinosaurs 65 million years ago. But not all. In the aftermath of the extinction event, birds — technically dinosaurs themselves — flourished. [...]
‘Mini kidneys’ reveal new insights into metabolic defects in polycystic kidney disease
Scientists at Nanyang Technological University, Singapore (NTU Singapore) have successfully grown 'mini kidneys' in the lab and grafted them into live mice, revealing new insights into the metabolic defects [...]
Decoding the Origin of Life: Scientists Solve Early Earth RNA Puzzle
Recent research illustrates how RNA molecules’ chemical characteristics might have played a crucial role in the development of complex life forms. How did complex life manage to evolve on [...]
Improving infectious disease testing with gold nanoparticles
By harnessing the power of composite polymer particles adorned with gold nanoparticles, a group of researchers have delivered a more accurate means of testing for infectious diseases. Details of their [...]
New micromaterial releases nanoparticles that selectively destroy cancer cells
Researchers have developed micromaterials made up only of proteins, capable of delivering over an extended period of time nanoparticles that attack specific cancer cells and destroy them. The micromaterials [...]
Alzheimer’s Breakthrough: Scientists Make Revolutionary Leap
Dementia is a major health issue worldwide in the 21st century, impacting over 50 million people globally. This figure is expected to soar to 152 million by 2050, as [...]
How small RNA molecules regulate viral infections of bacteria
Viruses need hosts. Whether it's measles, the flu or coronavirus, viral pathogens cannot multiply or infect other organisms without the assistance of their hosts' cellular infrastructure. However, humans are [...]
Computer scientists discover gap in the latest security mechanisms used by some chips
Over the past few years, hardware manufacturers have developed technologies that ought to make it possible for companies and governmental organizations to process sensitive data securely using shared cloud [...]
Microplastics Are a Big Problem, a New Film Warns
It’s been more than five decades since Dustin Hoffman’s character in “The Graduate” was offered a kernel of wisdom about the path to prosperity. “Plastics,” he’s told by Mr. McGuire, [...]
The Precarious Asymmetries of Human-AI Relationships
KEY POINTS Human-AI interactions are currently asymmetrical, lacking continuity and depth. AI evolution may lead to more sustained, contextually rich user relationships. Balancing asymmetry and connection requires design advocacy [...]
Vaping’s Hidden Dangers: New Study Links E-Cigarettes to DNA Changes
A new study led by researchers from University College London (UCL) and the University of Innsbruck reveals that individuals who use e-cigarettes, despite having a limited history of smoking, undergo similar changes in DNA within [...]
The Iron Twist: The Unexpected Driver of Long COVID
Iron levels and inflammation after COVID-19 infection are linked to long COVID, with research indicating that early intervention in iron regulation could mitigate long-term symptoms. Problems with iron levels in the [...]
Chemists develop method to confirm mRNA vaccine stability
University at Albany researchers at the RNA Institute have developed a new method to test COVID-19 vaccine integrity that could allow anyone with basic skills in vaccine handling to [...]
A New Cognitive Compartmentalization with Neural Implants
KEY POINTS Neuralink's demo introduces "cognitive compartmentalization," enabling simultaneous cognitive tasks. This signifies a potential expansion in human cognitive abilities, enhancing multitasking and creativity. Raises concerns about cognitive overload [...]
Global Warming and Plastic Pollution Are Inextricably Trapped in a “Vicious Circle”
Typically viewed as unrelated problems, global warming and plastic pollution are instead inextricably trapped in a “vicious circle” where one feeds the other, researchers in Sweden report in Nature Communications. [...]
Primordial Fuel: Uncovering Hydrogen’s Role at the Origin of Life
Hydrogen gas, dubbed the energy of the future, has been providing energy since 4 billion years ago. A recent study reveals how hydrogen gas, often touted as the energy [...]
COVID-19 Had a Much Greater Impact on Life Expectancy Than Previously Thought
A recent study published in The Lancet never-before-seen unprecedented details on the exceptionally high death rates due to the COVID-19 pandemic both within nations and internationally. Regions including Mexico City, Peru, and Bolivia [...]
Molecular Majesty: This Is How the Body’s Building Blocks Are Made
Human cells contain ribosomes, a complex machine that produces proteins for the rest of the body. Now the researchers have come closer to understanding how the ribosome works. “It [...]
U.S. issue warning about return of potentially deadly virus
The American South has been under constant duress from extreme weather events spurred by rising global temperatures, but the region could face a different kind of threat that it hasn't experienced [...]
Climate Change Ignites Global Infectious Disease Alarm
Experts highlight the connection between climate change and infectious diseases, urging medical professionals to prepare for new disease patterns and advocate for climate action. A team of infectious diseases [...]
How Lignin Nanoparticles Enhance UV Protection in Sunscreen Formulas
The innovative realm of cosmetic science has recently spotlighted lignin nanoparticles (LNPs) for their exceptional potential in fortifying sun protection measures within skincare products. These nanoparticles are celebrated for [...]
mRNA lipid nanoparticles for next-generation oral cancer tumor suppressor therapy
A study aiming to develop a lipid nanoparticles (LNP) platform for treating oral squamous cell carcinoma (OSCC) utilizing p53 mRNA was presented at the 102nd General Session of the IADR, [...]
Scientists have literally cut HIV out of cells
HIV has been completely eliminated from cells in a laboratory, raising hopes of a future cure. Researchers completed the revolutionary task by using a gene-editing tool known as Crispr-Cas, which won [...]
Common Medication Could Save Half a Million Lives Each Year – So Why Isn’t It?
A recent study conducted by scientists at the University of Southern California sheds light on the reasons why children are not receiving an affordable and effective diarrhea treatment. Medical [...]
X Marks the Spot: AI’s Treasure Maps Lead to Early Disease Detection
Medical diagnostics expert, doctor’s assistant, and cartographer are all fair titles for an artificial intelligence model developed by researchers at the Beckman Institute for Advanced Science and Technology. Their [...]
Scientists Discover Method To Identify Alzheimer’s Disease Before It Progresses to Dementia
Researchers at Aarhus University have discovered a method to identify Alzheimer’s disease before it progresses to dementia, potentially opening up new avenues for treatment. A groundbreaking study could pave [...]
Startling Discovery: COVID-19 Virus Can Stay in the Body More Than a Year After Infection
The COVID-19 virus can persist in the blood and tissue of patients for more than a year after the acute phase of the illness has ended, according to new research from UC [...]
New bioengineered protein design shows promise in fighting COVID-19
In the wake of the COVID-19 pandemic, scientists have been racing to develop effective treatments and preventatives against the virus. A recent scientific breakthrough has emerged from the work [...]
Sugar-coated gold nanoparticles can quickly eliminate bacterial infections, no antibiotics required
If left to their own devices, bacteria on our teeth or wounded skin can encase themselves in a slimy scaffolding, turning into what is called biofilm. These bacteria wreak [...]
Liquid Lightning: Nanotechnology Unlocks New Energy
EPFL researchers have discovered that nanoscale devices harnessing the hydroelectric effect can harvest electricity from the evaporation of fluids with higher ion concentrations than purified water, revealing a vast untapped energy [...]
Unmasking the Illusion: AI-Generated Faces Challenge Perceptions
Research shows survey participants duped by AI-generated images nearly 40 percent of the time. If you recently had trouble figuring out if an image of a person is real [...]
New Discovery Reveals How Cells Defend Themselves During Stressful Situations
Stress granules play a crucial role in the stress response, arising from the aggregation of non-translating mRNAs and proteins. Although significant knowledge exists about stress granules, the mechanisms behind [...]
Scientists use a new type of nanoparticle that can both deliver vaccines and act as an adjuvant
Many vaccines, including vaccines for hepatitis B and whooping cough, consist of fragments of viral or bacterial proteins. These vaccines often include other molecules called adjuvants, which help to [...]
Not Science Fiction: How Optical Neural Networks Are Revolutionizing AI
A novel architecture for optical neural networks utilizes wavefront shaping to precisely manipulate the travel of ultrashort pulses through multimode fibers, enabling nonlinear optical computation. Present-day artificial intelligence systems [...]
Turning skin cells into limb cells sets the stage for regenerative therapy
In a collaborative study, researchers from Kyushu University and Harvard Medical School have identified proteins that can turn or “reprogram” fibroblasts — the most commonly found cells in skin [...]
AI reveals prostate cancer is not just one disease
Artificial Intelligence has helped scientists reveal a new form of aggressive prostate cancer, which could revolutionise how the disease is diagnosed and treated in the future. A Cancer Research [...]
New Study Finds That Persistent COVID-19 Infections Are Surprisingly Common
Recent research conducted by the University of Oxford has found that a high proportion of SARS-CoV-2 infections in the general population lead to persistent infections lasting a month or more. The findings have [...]
Innovative nanosheet method revolutionizes brain imaging for multi-scale and long-term studies
The human brain has billions of neurons. Working together, they enable higher-order brain functions such as cognition and complex behaviors. To study these higher-order brain functions, it is important [...]
Scientists Have Discovered a Potential Universal Antivenom
Scientists at Scripps Research identified antibodies that protect against a host of lethal snake venoms. Scripps Research scientists have developed an antibody that can block the effects of lethal [...]
Scientists discover the human brain is even more powerful than we thought
The human brain could be far more powerful than we ever imagined, scientists have discovered. Researchers have identified cell messaging which have never been uncovered before, which suggests our brains are capable of [...]
Concerning – Bird Flu Has Evolved To Spread to Marine Mammals
A study from the University of California, Davis, and the National Institute of Agricultural Technology (INTA) in Argentina reveals that the highly contagious H5N1 avian influenza virus has evolved to transmit among [...]
AI technique ‘decodes’ microscope images, overcoming fundamental limit
Atomic force microscopy, or AFM, is a widely used technique that can quantitatively map material surfaces in three dimensions, but its accuracy is limited by the size of the [...]
Leave A Comment