An Interstellar Comet, in Time for the Holidays

On Dec. 7, the extrasolar comet now known as 2I/Borisov will make its closest approach to…

SpaceX Unveils Silvery Vision to Mars: ‘It’s Basically an I.C.B.M. That Lands’

Elon Musk delivered an update on his company’s Starship prototype, which faces business challenges and neighbors…

Elon Musk to Deliver SpaceX Starship Presentation

The founder of the private launch company will offer a major update on its next major…

Congratulations, You Survived Black Hole Week

Here are three cosmic events you may have missed and that fortunately missed you. …

The First United Arab Emirates Astronaut Is Heading to the Space Station

The Persian Gulf country has an ambitious, budding space program. Click here for original…

Sigmund Jähn, First German in Space and a Hero Back Home, Dies at 82

He spent almost eight days aboard a space station in 1978 and was hailed by East…

‘Ad Astra’ Review: Brad Pitt Orbits the Powers of Darkness

The latest from the director James Gray centers on an astronaut whose mission into deep space…

How to Cool a Planet With Extraterrestrial Dust

A study of fossil meteorites suggests that a distant asteroid collision once sent Earth into an…

The Maybe Comet From Another Star

Now zinging through Cancer: a glob of light from interstellar space? Click here for…

Did India’s Chandrayaan-2 Moon Lander Survive? The Odds Are Long

In the history of spaceflight, robotic probes that malfunction while landing on another world are never…