Where did Earth’s water come from? For years, scientists believed comets could have delivered it to Earth. But the Rosetta spacecraft revealed today that is not the case. Continue reading
On Saturday night at 9:30 p.m. ET, an alarm clock went off for NASA’s New Horizon probe, 2.9 billion miles away from Earth. At 9:52 p.m., the piano-size spacecraft sent a message back to Johns Hopkins Applied Physics Laboratory saying it was awake and all systems were functioning.
Watch the Orion spacecraft launch live here on the PBS NewsHour. Continue reading
NASA astrobiologist Chris McKay travels the most remote parts of Earth to understand how life might survive on other planets. But he’s also investigating another potential life form in space: humans. Can humans become a multi-planet species, he asks. Can … Continue reading
In our news wrap Thursday, House Republicans pushed through a bill to declare President Obama’s executive actions on immigration “null and void.” The House also passed a defense spending bill authorizing $585 billion in funding and expanding military operations in Iraq and Syria. Also, a grand jury in South Carolina indicted a white police officer in the murder of an unarmed black man. Continue reading
NASA envisions a human presence on Mars in 20 years. But how will we get there? The Orion spacecraft, an unmanned capsule, will launch on its maiden voyage as an important test for future missions. Science correspondent Miles O’Brien reports on the engineering hurdles as well as the budgetary ones. Continue reading
It will take a big rocket to get to Mars, and a big space capsule to protect humans during the months-long journey. It also takes decades of testing and development to plan a mission that will take humans further into … Continue reading
A team led by professors and scientists from the University of Colorado at Boulder discovered an invisible shield in space that blocks Earth from so-called “killer electrons.” Continue reading