Skip to main content
  1. Home
  2. Space
  3. News

SpaceX calls off today’s launch of Polaris Dawn

Add as a preferred source on Google

SpaceX has called off the launch of the highly anticipated Polaris Dawn mission for the second day in a row, but this time it has not set a new schedule.

In a message posted on social media on Tuesday evening about five hours before a Falcon 9 rocket carrying four passengers was due to lift off from the Kennedy Space Center in Florida, the spaceflight company said it had made the decision due to a weather forecast that suggested there will be unfavourable conditions off the coast of Florida in five days’ time, when the Crew Dragon spacecraft was due to splash down. It added that it will continue to assess the weather situation before deciding on a new launch schedule.

Recommended Videos

“Due to unfavorable weather forecasted in Dragon’s splashdown areas off the coast of Florida, we are now standing down from tonight and tomorrow’s Falcon 9 launch opportunities of Polaris Dawn,” SpaceX said. “Teams will continue to monitor weather for favorable launch and return conditions.”

The post made no mention of the ground-based helium leak that forced SpaceX to abandon a launch attempt early on Tuesday, but with the plan to launch Wednesday impacted apparently only by weather concerns, it appears that the helium issue has been resolved.

The mission, described recently by SpaceX chief Elon Musk as “epic,” will see a Crew Dragon fly 435 miles (700 kilometers)from Earth, its furthest distance yet. It will also involve the first commercial spacewalk, and will test a more comfortable and mobile spacesuit design that could be used for missions to the moon and beyond.

The mission is also notable for the fact that all four crew members are non-professional astronauts, although they have undergone extensive training for the historic mission.

Only one of the crew — Jared Isaacman — has been to space before, while the other three members will be heading to orbit for the first time.

Trevor Mogg
Contributing Editor
Not so many moons ago, Trevor moved from one tea-loving island nation that drives on the left (Britain) to another (Japan)…
Dimming the sun sounds unhinged, but this new study on El Niño makes a surprisingly good case for it
A natural test case, Australia's worst-ever wildfire season, suggests the idea deserves serious consideration.
Nature, Outdoors, Sky

When I first saw "scientists propose dimming the sun," I rolled my eyes. It sounds like a science fiction movie cooked up after watching many climate documentaries. But a new study, published on July 8, 2026, in the journal Science Advances, seems to have a genuinely compelling argument.

A Super El Niño is currently forming in the Pacific, feared to be the most intense in decades. It could escalate floods, wildfires, and extreme heat events worldwide. However, Researchers at UC San Diego's Scripps Institution of Oceanography, led by climate scientists Kate Ricke and Jessica Wan, are now proposing one of the most interesting solutions I’ve come across.

Read more
You can now walk through space and gaze into a black hole at this VR exhibit
Smithsonian Starstruck lets you drift past dying stars and see the origin point of the universe for as little as $18 a person.
Smithsonian Starstruck featured

Most planetarium shows ask you to sit still and look up. The Smithsonian's new VR exhibit takes a different approach, letting visitors walk through the vast expanse of the universe, drifting past stars, planets, and a black hole to get a physical sense of its true scale.

A $29 ticket to the edge of the galaxy

Read more
Scientists warn Elon Musk’s orbital data centers could blind Earth’s biggest telescopes
A new ESO study suggests millions of satellites could make parts of the night sky effectively unusable for astronomy.
One hour of satellites over the northern Atacama Desert in Chile (October 2025)

The race to blanket Earth with satellite internet has unlocked faster connectivity for millions. But according to the European Southern Observatory (ESO), it could also make one of humanity's oldest hobbies, and one of its most important sciences, a whole lot harder. The organization warns that the rapid growth of satellite mega-constellations could severely disrupt observations made by some of the world's most powerful telescopes.

Astronomers say the night sky is reaching its limit

Read more