Chris Impey / The Conversation

Content partner

More from Chris Impey / The Conversation

circa 1945: Astronomer Dr. Edwin Powell Hubble (1889 - 1953) sitting in a chair at a desk reading a journal. A staff member at Mt. Wilson Observatory, he was the first scientist to offer observational evidence supporting the theory, now known as Hubble's Law, of the expansion of the universe. (Photo by New York Times Co./Getty Images)
Deep Space

One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate.’

By Chris Impey / The Conversation

Evolution, the process of change, governs life on Earth − and potentially different forms of life in other places.
Science

Extraterrestrial life may look nothing like life on Earth

By Chris Impey / The Conversation

NASA’s Mars Sample Return mission has a shaky future
Private Space Flight

NASA’s Mars Sample Return mission has a shaky future

By Chris Impey / The Conversation

Galaxies in outer space.
Science

Why astronomers are blasting Earth’s location to potential intelligent aliens

By Chris Impey / The Conversation