Visible-light observation of multiple quasar images

Astronomy & Observing News

Chandra X-ray Observatory and the Missing Quasar Image

Astronomers puzzled over why a gravitationally lensed quasar was missing one of its images — then the Chandra X-ray Observatory found it.

Black and white representation of an ellipsoid asteroid

Astronomy & Observing News

Metal Shards Shed Light on the Origin of Asteroid Kalliope

Small relatives of the much-larger Kalliope, a metallic main-belt asteroid shed light on their mutual origin early in solar system history.

Southern Cross

Astronomy & Observing News

Are Objects from Alpha Centauri Streaming by Earth?

New calculations show that material ejected from the Alpha Centauri system could be streaming by Earth — but will we know it when we see it?

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