Through photometry and spectroscopy, we studied the evolution of the activity and chemical composition of comet 67P during its 2025 and 2021 perihelion passages and of comet 103P during its […]
Meteor impacts may have helped spark life on Earth, creating hot, chemical-rich environments where the first living cells could take shape, according to research integrated by a recent Rutgers University […]
A team of professional and amateur Japanese astronomers found evidence for a thin atmosphere around a small body in the outer Solar System. The object is so small that it […]
A long-standing idea in planetary science is that water-rich meteorites arriving late in Earth’s history could have delivered a major share of Earth’s water. A new study argues that the […]
Unlike planetary rovers operating on the Moon or Mars, robots working on asteroids and comets must interact with surfaces where gravity is extremely weak, terrain is highly irregular, and material […]
To date, three samples from near-Earth asteroids have been delivered to Earth by Japan’s Hayabusa (2010) and Hayabusa2 (2020) missions, and the United States OSIRIS-REx mission (2023).
Less than a year ago, astronomers discovered a comet soaring through our sky that was not from our solar system.
Carbonaceous chondrites are samples from planetesimals that formed 2-4 million years after solar system formation began.
The surface and subsurface of worlds beyond Mars remain largely unexplored. Yet these worlds hold keys to fundamental questions in planetary science – from potentially habitable subsurface oceans on icy […]
New observations from the Atacama Large Millimeter/submillimeter Array (ALMA) have yielded the first-ever measurement of deuterated water — also known as semi-heavy water — in an interstellar object. The discovery […]
