Though photons do not have mass, they do transfer momentum when they reflect off a reflective space sail, giving it a slight boost.

Future of Space Exploration

LightSail 2 Launches to Space to Soar on the Power of Sunshine

The Planetary Society’s second solar sail will attempt to use sunlight to fly through space

Future of Space Exploration

The International Space Station Is Open for Business—and Tourists

NASA is relaxing its restrictions on commercial activities on the ISS as part of an effort to free up funding for other projects

The sixty Starlink satellites before being deployed.

Future of Space Exploration

Astronomers Worry New SpaceX Satellite Constellation Could Impact Research

The first of SpaceX’s 12,000 Starlink broadband satellites launched last week, raising fears they could interfere with ground-based telescopes

A Falcon 9 SpaceX rocket, with a payload of 60 satellites for SpaceX's Starlink broadband network, lifts off from Space Launch Complex 40 at the Cape Canaveral Air Force Station in Cape Canaveral, Fla., Thursday, May 23, 2019.

Future of Space Exploration

SpaceX Launched 60 Internet-Beaming Satellites Into Orbit

Last night’s successful launch was the first big step in SpaceX’s plan to provide global internet coverage from space

The SpaceX Crew Dragon spacecraft docked to the International Space Station.

Future of Space Exploration

After a Successful Test Flight to the International Space Station, SpaceX Looks Ahead to Launching Astronauts

SpaceX’s new Crew Dragon spacecraft could launch the first astronauts from U.S. soil in almost a decade

SpaceX released an updated rendering of the Big Falcon Rocket launching into the solar system

Art Meets Science

Elon Musk Is Sending a Japanese Billionaire to the Moon, and He’s Taking a Group of Artists With Him

Yusaku Maezawa hopes to recruit six to eight artists for the week-long mission, which is expected to launch as early as 2023

The drill hole in the ISS.

Trending Today

Russia Says Hole in International Space Station Was Drilled

Authorities are unsure whether tiny hole in a Soyuz capsule was created in a production facility on the ground or on board the ISS

Trending Today

Five Things to Know About NASA’s New Planet-Hunting Satellite

TESS will scan the skies in search of the next crop of exoplanets

Trending Today

NASA Sends Human Sperm to the International Space Station

Astronauts will study how microgravity affects the motility of the little swimmers

SpaceX launches it's first re-used Falcon 9 rocket

Five Things to Know About SpaceX’s First Internet Satellite Launch

Along with an earth-observing satellite, the company will be testing two of a planned 12,000 internet satellites

Tesla Roadster Has Six Percent Chance of Crashing to Earth in the Next Million Years

Don’t worry, it’s unlikely to happen anytime soon—and even if it does most of it would burn up on entry

Is SpaceX Being Environmentally Responsible?

Falcon Heavy’s flashy space car may not have been the best idea—for Mars

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