Carolyn Collins Petersen

A team of 14 researchers from the United States and Chile have found evidence of a subgiant star eating one of its planets.

A chip of zircon found in Western Australian rocks at a place called North Pole Dome revealed the age of Earth's oldest known impact crater.

Comets have played an interesting role in astronomy history. From antiquity, many cultures saw them omens or spirits, portending good or bad news for kings, queens, and emperors.

When you look at the Milky Way stretching across the sky, it shows the result of billions of years of evolution. Collisions and mergers play a huge role in that process.

On September 22, 2021, the IceCube Neutrino Detector in Antarctica caught a blast of neutrinos as it passed through the solar system.

Observations of a distant cluster of stars in our galaxy have resulted in a new class of objects that turn out to be galactic building blocks. Researchers used Hubble Space Telescope (HST) and the James Webb Space Telescope (JWST) to study the stars that make up Terzan 5, long though to be a globular cluster. What they found puts that cluster into a very rare class of objects called

Some of the most massive galaxies in the Universe appear to be missing a lot of stars. That seems unusual, since birthing stars is one of a galaxy's main tasks as it grows.

Comets have played an interesting role in the history of astronomy. Since antiquity, many cultures saw them as omens or spirits, portending good or bad news for kings, queens and emperors. Over the past few hundred years, however, astronomers have studied them intently to understand the science behind these visitors to the inner solar system. Today, we know that these ghostly apparitions in the sky are dirty balls of ice and rock blasting through space, scattering dust and gases as they go.

Where does the Solar System end and interstellar space begin? That's a question scientists have been working to answer using spacecraft traveling out beyond the Sun's influence.

Somewhere in the Milky Way Galaxy is an old star that has lost one of its comets. By some quirk of orbital mechanics, that frozen nucleus of ice