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Science
The Solar System May Have a 6th Dwarf Planet
Astronomers have identified a new dwarf planet candidate beyond Pluto, potentially making it the sixth recognized dwarf planet in our solar system.
Outer Solar System
7 trends tracked about this subject — the full history, oldest to newest below.
▲ Peaking
Science
Backward world? Rubin finds a retrograde object past Neptune
Astronomers using the Rubin Observatory have found an object beyond Neptune orbiting backward relative to the planets, sparking debate over whether it was captured from interstellar space or flung outward by Neptune.
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Science
Meteorite that landed in Cape Cod was a 'lone wolf' from the outer solar system, scientists find
A meteorite that fell over Cape Cod in May has been traced to the outer solar system, marking a rare 'lone wolf' arrival shaped by Jupiter's gravity.
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Science
Scientists discover massive dwarf planet lurking in the outer solar system
A new massive dwarf planet has been spotted on the fringe of our solar system, prompting fresh excitement among astronomers.
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Science
The Outer Solar System's First Building Blocks Were Mostly Fire, Not Ice
New research reveals the outer Solar System's earliest building blocks were predominantly heat-formed fire beads rather than ice.
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Science
Rubin Observatory reveals its first dwarf planet candidate in our solar system
Rubin Observatory’s first dwarf‑planet candidate, 2026 ED138, emerges beyond Pluto, hinting at a hidden world family.
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Science
🔮 fades ✓
The asteroid that killed the dinosaurs was around ten kilometres wide and hit 66 million years ago, and a 2024 study of rare metals in the debris it left behind traced its birthplace to beyond Jupiter, in the outer solar system
Coverage examines the size, origin, and extreme thermal effects of the asteroid that struck Earth 66 million years ago.