Tag

Interstellar Comet

All articles tagged with #interstellar comet

Solar Oberth Maneuver Could Put a Spacecraft on Track to Intercept Interstellar Comet 3I/ATLAS
astronomy3 days ago

Solar Oberth Maneuver Could Put a Spacecraft on Track to Intercept Interstellar Comet 3I/ATLAS

Space.com reports a team proposes using a solar Oberth maneuver near 3.2 solar radii to launch a ~500 kg spacecraft in 2035, aided by a Jupiter gravity assist and heavy boosters, to perform a high-speed flyby of interstellar comet 3I/ATLAS by around 2085 at about 732 AU from the Sun. The interceptor would be heat-shielded and not intended to enter orbit, making it a close-proximity encounter rather than a rendezvous. While the concept is theoretically feasible and could push the boundaries of solar-system exploration, researchers note more practical, near-term approaches (like ESA’s Comet Interceptor) could target interstellar objects sooner.

Interstellar Comet 3I/ATLAS Survives Solar Flyby, Revealing Planet-Building Clues
space16 days ago

Interstellar Comet 3I/ATLAS Survives Solar Flyby, Revealing Planet-Building Clues

NASA’s Hubble reobserved interstellar comet 3I/ATLAS during its close solar approach, allowing scientists to track nickel and iron emissions before and after perihelion with unprecedented precision. The study found the observed outer layers are sun-baked crust rather than pristine material, complicating direct measurements of its original metallicity, but SPHEREx data showing dust, water, and organics in the coma, along with the metal measurements, provide valuable insights into how heavy elements behave in other star systems and what this implies about planet formation.

SPHEREx Logs Fresh Organic Signals From Interstellar Visitor 3I/ATLAS
space21 days ago

SPHEREx Logs Fresh Organic Signals From Interstellar Visitor 3I/ATLAS

NASA’s SPHEREx observed interstellar comet 3I/ATLAS brighten in December 2025, detecting organic molecules such as methanol, cyanide and methane in a increasingly active coma rich in CO2, CO and H2O. Delayed venting—driven by solar heating penetrating deep into the crust—releases pristine ices and rocky material, highlighting the comet’s processed exterior and complex chemistry, and showcasing SPHEREx’s capability to study such rare, far‑flung visitors.

TESS probes interstellar visitor 3I/ATLAS to reveal its spin
space27 days ago

TESS probes interstellar visitor 3I/ATLAS to reveal its spin

NASA's exoplanet-hunting telescope TESS observed interstellar comet 3I/ATLAS during Jan. 15–22, compiling a 28‑hour sequence to study the comet’s activity and rotation. The object appeared at about magnitude 11.5, and MIT researcher Daniel Muthukrishna stitched the observations into a video showing its trajectory as it leaves the solar system. Although TESS briefly entered safe mode, causing a time jump, the January data are publicly available, and scientists hope to infer how fast the nucleus spins and how dust and gas are shed from the comet.

Farewell to Interstellar Visitor 3I/ATLAS — Free Livestream Captures Its Escape
space1 month ago

Farewell to Interstellar Visitor 3I/ATLAS — Free Livestream Captures Its Escape

Space.com reports that interstellar comet 3I/ATLAS, discovered in 2025, is on an escape trajectory out of the solar system. A free livestream on Jan. 16 (5 p.m. EST) from the Virtual Telescope Project will present real-time views from a 14-inch telescope in Manciano, Italy, marking its final public observation before the comet heads into interstellar space.

Astronomers Confirm Interstellar Comet 3I/ATLAS Is Not Alien in Origin
science1 month ago

Astronomers Confirm Interstellar Comet 3I/ATLAS Is Not Alien in Origin

Astronomers used the Green Bank Telescope to search interstellar comet 3I/ATLAS for signs of extraterrestrial technology but found no technosignatures, confirming it is a natural comet and not an alien spacecraft. The study highlights the importance of continued searches for interstellar objects that might harbor technological signals in the future.

Top Space Highlights and Photos of 2025
science2 months ago

Top Space Highlights and Photos of 2025

The article highlights the top 12 space stories of 2025, including international cooperation to prevent satellite collisions, a sudden disappearance of a lake in Quebec, the James Webb Space Telescope's study of an interstellar comet, Earth's shortest days, and the return of Soviet and Russian spacecraft, with a focus on how political and technological developments shaped the year's space events.