The spending measure is expected to include $1.4 billion for new barriers in Texas' Rio Grande Valley, among other border security measures.
In high-risk maneuver, New Horizons cruises by mysterious, bowling pin-shaped Ultima Thule, 4 billion miles from Earth.
Flight controllers at NASA's Jet Propulsion Lab and crowds at viewing parties celebrate InSight's safe arrival for a geological mission.
The planet's protective layer is finally recovering from damage caused by aerosol sprays and coolants, according to a new United Nations report.
Invisible flickering from living vegetation detected by satellite could help scientists better assess how the exploitation of fossil fuels affects the climate.
The Falcon Heavy rises from the same launch pad used by NASA nearly 50 years ago to send men to the moon. It carries a red Tesla Roadster aiming for an endless road trip past Mars.
Scientists say 2017 was the hottest year on record without an El Nino boosting temperatures naturally.
Don Lincoln, a senior physicist at Fermilab, says we need a better warning system for potentially catastrophic solar flares.
Of 16 people tapped for science leadership roles in the federal government, seven have ties to industries they would regulate or help fund.