Space

Outer space, or simply space, is the expanse that exists beyond the Earth and between celestial bodies. Outer space is not completely empty—it is a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays. The baseline temperature of outer space, as set by the background radiation from the Big Bang, is 2.7 kelvins (−270.45 °C; −454.81 °F).

Main Content

NASA Selects 2 Missions to Study ‘Lost Habitable’ World of Venus

“NASA has selected two new missions to Venus, Earth’s nearest planetary neighbor. Part of NASA’s Discovery Program, the missions aim to understand how Venus became an inferno-like world when it has so many other characteristics similar to ours …

NASA’s Perseverance Rover Begins Its First Science Campaign on Mars

“The six-wheeled scientist is heading south to explore Jezero Crater’s lakebed in search of signs of ancient microbial life. On June 1, NASA’s Perseverance Mars rover kicked off the science phase of its mission by leaving the “Octavia …

See the First Images NASA’s Juno Took As It Sailed by Ganymede

“The first two images from NASA Juno’s June 7, 2021, flyby of Jupiter’s giant moon Ganymede have been received on Earth. The photos – one from the Jupiter orbiter’s JunoCam imager and the other from its Stellar Reference …

Then There Were 3: NASA to Collaborate on ESA’s New Venus Mission

“As a key partner in the mission, NASA provides the synthetic aperture radar, called VenSAR, to make high-resolution measurements of the planet’s surface features. On June 10, 2021, the European Space Agency (ESA) announced the selection of EnVision as …

Galileo satellites’ last step before launch

“Europe’s Galileo satellite navigation constellation is set to grow. Later this year the first two out of 12 ‘Batch 3’ Galileo satellites will be launched by Soyuz from French Guiana. Their last step on the way to launch is …

SpaceX launches new solar arrays to space station, nails rocket landing at sea

“SpaceX launched its 17th rocket of the year today (June 3), sending a robotic Dragon cargo capsule toward the International Space Station before nailing a landing at sea. A two-stage Falcon 9 rocket blasted off from Pad 39A here at …

Europa’s Interior May Be Hot Enough to Fuel Seafloor Volcanoes

“Jupiter’s moon Europa has an icy crust covering a vast, global ocean. The rocky layer underneath may be hot enough to melt, leading to undersea volcanoes. New research and computer modeling show that volcanic activity may have occurred on …

Surviving an In-Flight Anomaly: What Happened on Ingenuity’s Sixth Flight

“On the 91st Martian day, or sol, of NASA’s Mars 2020 Perseverance rover mission, the Ingenuity Mars Helicopter performed its sixth flight. The flight was designed to expand the flight envelope and demonstrate aerial-imaging capabilities by taking stereo images …

Virgin Galactic rocket ship ascends from New Mexico

“Virgin Galactic on Saturday made its first rocket-powered flight from New Mexico to the fringe of space in a manned shuttle, as the company forges toward offering tourist flights to the edge of the Earth’s atmosphere. High above the …

China’s Tianwen-1 probe sends back Mars landing visuals

“Two photos and two videos captured by China’s Mars probe Tianwen-1 during and after the country’s first landing on the red planet were released by the China National Space Administration (CNSA) on Wednesday. The lander carrying a rover …