Search results for Trans Neptunian Object

Astronomy May 4, 2026

A tiny world beyond Neptune has an atmosphere that shouldn't exist

A team of professional and amateur Japanese astronomers have found evidence for a thin atmosphere around a small body in the outer solar system. The object is so small that it should not have a sustainable atmosphere, raising ...

Planetary Sciences Apr 2, 2026

Early data from Vera C. Rubin Observatory reveals over 11,000 new asteroids

Using preliminary data from the Vera C. Rubin Observatory, scientists have discovered over 11,000 new asteroids. The data were confirmed by the International Astronomical Union's Minor Planet Center (MPC), making this the ...

Astrobiology Feb 23, 2026

Exomoons could reveal themselves through lunar eclipses

Our solar system hosts almost 900 known moons; more than 400 orbit the eight planets while the remaining orbit dwarf planets, asteroids, and Trans-Neptunian Objects (TNOs). Of these, only a handful are targets for astrobiology ...

Planetary Sciences Sep 9, 2025

Methane gas found on dwarf planet Makemake

A Southwest Research Institute-led team has reported the first detection of gas on the distant dwarf planet Makemake, using NASA's James Webb Space Telescope (JWST). This discovery makes Makemake only the second trans-Neptunian ...

Astronomy Jul 29, 2025

The hunt for 'planet nine': Why there could still be something massive at the edge of the solar system

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labeled as planet X, prominent astronomers had put it forward as ...

Planetary Sciences Jul 16, 2025

Astronomers use the colors of trans-Neptunian objects to track an ancient stellar flyby

Trans-Neptunian objects (TNO) are some of our solar system's lesser-known objects. They number in the thousands, and they get their name from their orbits. These dwarf planets orbit the sun at a greater average distance than ...

Planetary Sciences Jul 15, 2025

Rare distant object 2020 VN40 found in perfect sync with Neptune

A team of astronomers led by the Center for Astrophysics | Harvard & Smithsonian has discovered a rare object far beyond Neptune, from a class known as trans-Neptunian objects, that is moving in rhythm with the giant planet. ...

Planetary Sciences Jun 18, 2025

Stellar flybys have not altered Earth's climate in the past 56 million years, study finds

If our solar system seems stable, it's because our short lifespans make it seem that way. Earth revolves, night follows day, the moon moves through light and shadow, and the sun hangs in the sky. But in reality, everything ...

Astronomy Jun 4, 2025

Rubin Observatory to detect millions of new solar system objects in vivid detail, simulations suggest

A group of astronomers from across the globe, including a team from the University of Washington and led by Queen's University Belfast, have revealed new research showing that millions of new solar system objects will be ...

Astronomy Jun 2, 2025

Passing stars could have a significant impact on the future of our solar system

For centuries, astronomers have sought to understand the formation and evolution of the solar system and the dynamics that govern it. In particular, there is the long-standing question of whether or not the planets' orbits ...

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