New simulations could help solve long-standing mystery in astrophysics.
Marcus Woo, Contributor
Saturn's rings, Mars' geology and an artist's depiction of distant new worlds were among this month's most captivating space images.
Abigail Malate, Staff Illustrator
Clouds above giant planet beyond our solar system are made from the same mineral as rubies and sapphires.
Charles Q. Choi, Contributor
Scientists use data from the New Horizons mission to illuminate the mystery.
Observations of the region beyond the planet Neptune are giving astronomers fresh understanding of our solar system's history – and may reveal a new planet.
Peter Gwynne, Contributor
New observations point to processes driving away the atmosphere, rendering the planet's surface inhospitable to life.
Ramin Skibba, Contributor
New research explains the careful choreography of a multi-planet system called Kepler-233.
Eclipses would be a thing of the past.
Marsha Lewis, Contributing Producer
In 130 million years, these planets will become dinner for their dying host star.
Cynthia McKelvey, Contributor
Inside Science is an editorially independent news service of the American Institute of Physics