Cosmic Expansion: The ‘Horizon’ for Intergalactic Travel
Avi Loeb examines some of the limitations imposed on intergalactic travel through accelerated cosmic expansion.
Avi Loeb
Will Your Home Be Hit by a Meteorite?
Could your home be hit by a meteorite? It isn't a frequent occurrence... but that doesn't mean it never happens.
Would You Press a Button on an Extraterrestrial Gadget?
If you were to recover an extraterrestrial gadget, would you press its buttons?
Unidentified Aerial Phenomena: Science “From Farm to Table”
Scientists, working with open data like the Galileo Project comprises, must help the U.S. government unravel the nature of UAP.
Discovering Extraterrestrials Offers Benefits, Not An Existential Risk
In 2010, Stephen Hawking warned that aliens might pose an existential risk to humanity, and that we should therefore be careful about broadcasting our existence to interstellar space.
Will Future AI Systems be Legally Liable?
Future risks from AI systems may include controlling WMDs and the forgery of scientific results. Who should be held liable for such actions?
Exotic Propulsion: Technological Probes From the Final Frontier
By studying interstellar objects, we may learn about new exotic propulsion methods that will make it easier for us to venture into interstellar space.
Is `Oumuamua a Hydrogen-Water Iceberg?
Was `Oumuamua a hydrogen-water iceberg? Harvard Astronomer Avi Loeb weighs in on a recent paper on the mysterious interstellar space object.
The Allegory of the Cave: An Interstellar Interpretation
In this installment of "Our Cosmic Neighborhood," Harvard astronomer Avi Loeb takes a look at an ancient philosophical dialogue in the context of interstellar artificial intelligence.
Physics of the Phenomenon: A New Scientific Perspective on Aerial Mysteries
Harvard astronomer Avi Loeb joins us to discuss a recent paper he and AARO director Sean Kirkpatrick authored on the physics of UAP.
Avi Loeb and the DoD’s Chief UAP Investigator Sean Kirkpatrick Say Solving Aerial Mysteries Requires Known Physics
In a new paper, Harvard astronomer Avi Loeb and AARO director Sean Kirkpatrick say that evaluations of UAP must rely on known physics.
Interstellar Conservation: City Lights in Our Sky and Plastic in Our Oceans
The most consequential choice that our technological civilization can make is between commercial benefits and preserving nature.
Interstellar Romance: Connecting Our Human Affairs to the Stars
For the first time in the history of astronomy, connecting our human affairs to the stars might make complete sense.
Science Is Better Than Politics and Popularity Contests
The elemental composition of the first interstellar meteor will be decided by a mass spectrometer, not by the number of likes it gets on Twitter.
Has Earth Ever Had Encounters With Interstellar AI Devices in Its Past?
What is the chance that a technological gadget with an interstellar version of ChatGPT would visit Los Alamos for lunch in 1950?
Imagine Interstellar: Humanity’s Path to Becoming an Interstellar Species
"Interstellar travel favors the scientifically inclined, exploring civilizations," says Harvard astronomer Avi Loeb in his latest Op Ed.
An Astronomer’s Thoughts on the 2022 ODNI Report on UAP
Harvard astronomer Avi Loeb offers his views on the recent release of the 2022 ODNI report on unidentified anomalous phenomena.
Beliefs Versus Evidence: Science, Supersymmetry, and Beyond
In the battle of belief versus evidence, we must avoid the tendency to get entrenched in ideas that cannot be falsified.
Seeking Immortality in Space: Encounters With ‘Interstellar Memorabilia’
Like prehistoric cave paintings, finding interstellar extraterrestrial devices might indicate that the quest for immortality is universal to all sentient beings past and present throughout the Milky Way galaxy.
Creating a Transient Star in the Laboratory
The recent achievment of fusion ignition marks the first instance where humans were able to create the likeness of a tiny transient star in the lab.
Panspermia: Was Terrestrial Intelligence Seeded by a Cosmic Gardener?
How can we determine from circumstantial evidence on multiple planets whether panspermia might have occurred?
The Confluence of Natural and Artificial Intelligence
Nature established two distinct pathways for reflecting upon itself, one based on natural intelligence and the second based on artificial intelligence.
Cosmic Seeds of the Biggest Black Holes
As any gardener knows, growth is initiated by seeds. What were the seeds that enabled supermassive black holes to grow so early in cosmic history?
The State of the Universe: Lost Civilizations from Our Cosmic Past
Future interstellar travel could reveal that the "State of the Universe" is far more significant than our present concerns over worldly political matters at home.
Knowledge, Belief, and the Cosmos: The Proper Way of Swiping Left or Right
The suite of instruments assembled by the Galileo Project will seek the evidence needed to properly swipe the extraterrestrial interpretation of UAP to the left or to the right.
Let It Be… An Intelligent Signal
Will aliens ever see an intelligent signal from Earth, or only evidence of our self-destructive tendencies in flashes from nuclear blasts?
When It Comes to Interstellar Travel, There Are Both Hazards and Benefits
There will be both good and bad for any future earthlings or technologies of our design that may engage in interstellar travel.
The Arrow of Cosmic Time: From Simplicity to Complexity and Back
During a recent lecture at the University of Michigan that I gave, I was asked why the arrow of cosmic time is characterized by a transition from simplicity to complexity.
The NASA UAP Study: A New Calculation On the Fly
Astronomer Avi Loeb shares his thoughts following a recent meeting in Washington with members of the forthcoming NASA UAP Study.
Gravitational Propulsion: Could We Travel Through Space by Manipulating Dark Energy?
Could gravitational propulsion enable us to traverse the stars by manipulating the cosmic dark energy that makes the vacuum?
What went wrong on Mars? Life is Hard Work, But Luck Helps
It is often said that “life was better in the good old days.” Avi Loeb explains why this definitely holds true for Mars.
Do Astronomers Exist on Other Habitable Planets?
Could astronomers also be a possibility on distant habitable exoplanets, much like the ones who study exoplanets from here on Earth?
Open Science and Unidentified Aerial Phenomena
Avi Loeb weighs in on the recent controversial Ukrainian UAP study and reactions to it from other commentators.
Rogue Planets: Potential Hosts to Life and Other Mysteries?
If interstellar travel agencies were to sell tickets for a ride on these relativistic planets, I would be first in line to board them.
The Discovery of a Second Interstellar Meteor
Meter-Size Interstellar Objects Are Much Tougher than Solar System Rocks!
Meter-Size Interstellar Objects Are Much Tougher than Solar System Rocks!
In a new paper with student Amir Siraj, Avi Loeb says they have identified a second interstellar meteor, IM2, in the CNEOS fireball catalog of NASA.
A Meeting with ‘Oumuamua at the Venice Film Festival
On September 3, 2022, the 79th Venice Film Festival hosted a session titled “Meeting with `Oumuamua” at the Excelsior Hotel in Venice.
Wish Upon a Star
Imagine if every human that ever lived had a star of their own; how would this broaden our individual sense of our place in the cosmos?
The Gifts of Active Galactic Nuclei
Since metals seed life, galactic nuclei may offer these benefits if the seeds can ever blossom and become sentient civilizations.
The Enigmatic Cosmos: Universal Laws and Life on Other Worlds
Astronomer Avi Loeb looks at the nature of scientific knowledge, as he discusses dark matter, the universe, and life on other worlds.
Extraterrestrial Intelligence: What is Our Rating on the Cosmic Dating Scene?
Avi Loeb shares his insights on the first Galileo Project conference and the scientific search for the relics left behind by extraterrestrial intelligence.
Cosmic Origins: When Did the First Stars Form?
Stars could not have existed during early phases of the universe because the extreme heat would have dispersed them. Hence, the question: When did the first stars form?
Interstellar Archaeology: The Search for Non-Terrestrial Artifacts
If anomalous, non-terrestrial artifacts exist in space, using the best tools at our disposal through "interstellar archaeology" may find them.
The Bright Side of the Moon
Interstellar travel would require major investments. Instead, first we should examine the objects that arrive in our solar system from interstellar space.
Life Not As We Know It: Probing the Nature of Dark Matter
If any civilizations out there use dark matter or dark energy to fuel their spacecraft, they may be harder to detect than we might assume.
The First Bits of the Cosmos Caught in Webb’s Web
Could new data being obtained by the James Webb Space Telescope confirm past forecasts about our universe?
Looking to the Skies, Astronomers Assemble the New Eyes and Brain of the Galileo Project
The new telescopes of the Galileo Project provide a unique observatory with innovative capabilities. What will they help us learn about UAP?
Sunlight and the Extinction of Gamma-Rays
Our ultimate cosmic destiny is to become dark matter. For now, let’s enjoy the light show while it lasts.
Quantum-Gravity Engineers of the Future May Find Local and Extraterrestrial Opportunities
Decades after a Quantum-Gravity theory will be discovered, there might be job advertisements for engineers who use it to build vehicles that would carry humans to the stars faster than imagined before.
NASA’s UAP Study: Imitation is the Sincerest Form of Flattery
NASA's announcement that it will study unidentified aerial phenomena is a win-win for science, as it follows similar efforts by the DOD and civilian groups like the Galileo Project.
The Beginner’s Mind of Machine Learning
As advances in machine learning continue, we can expect to see fewer of the "beginner's mistakes" of its early experimental phase.