Explore how the laws of motion take us from Earth into space.

In the future interstellar exploration at near-relativistic speeds will be possible using beamed energy laser propulsion. With this, spacecraft as small as gm mass picospacecraft become candidates for...

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The Interstellar Research Group is pleased to announce the upcoming special symposia hosted by The Venetian Institute of Sciences, Letters and Arts in association with The Interstellar Research Group ...

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Adam Hibberd An article I wrote for Principium, quarterly publication of the ‘Initiative for Interstellar Studies’, several years ago now, not long after the first interstellar object p…

We describe how the ESA Comet Interceptor mission, which is due to launch in 2028/29 to a yet-to-be-discovered target, can provide a conceptual basis for a future mission to visit an Interstellar Obje...

Interstellar Research Group Our 7th Interstellar Symposium will be taking place September 25-27, 2021 (with pre-symposium seminars taking place on the 24th) in Tucson, AZ at the Tucson Marriott University Park. This symposium will directly follow the NASA NIAC symposium at the same hotel, and will t…

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Principium 50 – Contents LEAD FEATURE BOOK REVIEW The Ross 248 Project (<a href="https://i4is.org/wp-content/uploads/2025/08/BOOK-REVIEW-The-Ross-248-Project-Principium50-2508261234.pdf">https://i4is...

PDF | The interstellar object 3I/ATLAS is expected to arrive at a distance of $53.56(\pm 0.45)$ million ${\rm km}$ ($0.358\pm 0.003$~au) from Jupiter on... | Find, read and cite all the research you n...

Project Hyperion explores the feasibility of crewed interstellar travel via generation ships, using current and near-future technologies. A generation ship is a hypothetical spacecraft designed for lo...

How might humanity send a mission to explore or even deflect a potentially hazardous object (PHO)? A PHO is a celestial body, usually an asteroid, which regularly intersects Earth’s orbit and, dependi...

At this early stage of its passage through our Solar System, 3I/ATLAS, the recently discovered interstellar interloper, has displayed various anomalous characteristics, determined from photometric and...

At this early stage of its passage through our Solar System, 3I/ATLAS, the recently discovered interstellar interloper, has displayed various anomalous characteristics, determined from photometric and...

Distant Worlds, Neighboring Opportunities An Interstellar Research Group EventOctober 12-15, 2025 AT&T Conference CenterUniversity of Texas at Austin CALL FOR PAPERS REGISTER TODAY HOTEL RESERVATION I...

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Step into the future of space exploration with the First European Interstellar Symposium, hosted by the Interstellar Research Group in collaboration with Ini...

In a recent paper, Adam Hibberd and Marshall Eubanks explore the feasibility of sending a mission to rendezvous with YR4, the asteroid that may pose a hazard to Earth someday.

Chemical rockets are loud, noisy and can only get us so far. If we want to reach another star system, we’ll need something better—either super energy-dense fuel to improve the efficiency of chemical rockets or a way to push spacecraft using beams of energy, like a photonic lightsail. A new paper looks at the pros … Continue reading "Photonic Lightsails are our Best Shot at Reaching Another Star"