The experimental jet was built to kill the sonic boom. First, it has to survive going supersonic.

A new study finds pollution from satellite megaconstellations could account for 42% of the space sector’s climate impact by 2029.

A new study finds pollution from satellite megaconstellations could account for 42% of the space sector’s climate impact by 2029.

A new study finds pollution from satellite megaconstellations could account for 42% of the space sector’s climate impact by 2029.

A stubborn crack in the station's oldest Russian module is bleeding air into space, and engineers are running out of patches.