研究人员认为氮冰是最可能构成这一神秘星际物体的物质。
Comets
Posted inResearch Spotlights
‘Oumuamua May Be an Icy Fragment of a Pluto-Like Exoplanet
Researchers favor nitrogen ice as the most likely material for the mysterious interstellar object’s composition.
Posted inNews
Armagedón a 10,000 A.C.
Fragmentos de un cometa probablemente golpearon la Tierra hace 12,800 años, y una pequeña aldea del Paleolítico en Siria podría haber sufrido el impacto.
Posted inNews
Armageddon at 10,000 BCE
Fragments of a comet likely hit Earth 12,800 years ago, and a little Paleolithic village in Syria might have suffered the impact.
Posted inNews
Interstellar Visitors Could Export Terrestrial Life to Other Stars
A handful of interstellar objects and long-period comets could have scooped up microorganisms from Earth and carried them to worlds around other stars.
Posted inNews
Interstellar Interloper Borisov Looks Like a Regular Comet, for Now
A first look at the chemical composition of the interstellar comet Borisov reveals ingredients that look a lot like those found in solar system comets. That’s not likely to last very long.
Posted inNews
Meteorite’s Hidden Treasure: A Comet
A fragment of a comet found hidden inside a meteorite is offering new insights into the dynamics of our young solar system.
Posted inNews
More Discoveries in the Cards from Defunct Comet Mission
A year after the end of the Rosetta mission, the real scientific fun begins.
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Cracking Comet: A Window to the Past
An unusual feature on comet 67P/Churyumov-Gerasimenko offers insights into cometary origins.
Posted inNews
Rosetta Spacecraft Death-Dives into Comet Companion—On Purpose
On the way to its demise, the probe intimately viewed a dust-spewing pit and measured close up the gravity field, temperature, and other features of the comet.