WATCH: Neil deGrasse Tyson to commentate SpaceX's historic mission to ISS

The Demo-2 mission represents a new era for American spaceflight.

WATCH: Neil deGrasse Tyson to commentate SpaceX's historic mission to ISS
  • On Wednesday afternoon, SpaceX is set to become the first private company to launch humans into orbit.
  • The company's Crew Dragon, launched by the Falcon 9 rocket, is scheduled to take two NASA astronauts to the International Space Station.
  • Neil deGrasse Tyson will host the American Museum of Natural History's live-stream coverage of the launch.

On Wednesday afternoon, a SpaceX rocket is set to launch two NASA astronauts into space on a mission to the International Space Station. If successful, it'll be the first time a private company has put humans into orbit, and the first time astronauts have launched from American soil since NASA's Space Shuttle program ended in 2011.

At 4:33 p.m E.T., SpaceX's Falcon 9 rocket is set to take off from the company's Launch Complex 39A site in Cape Canaveral, Florida. About 90 minutes before launch, NASA astronauts Bob Behnken and Doug Hurley will walk across a walkway 230 feet above the ground and climb into Crew Dragon — the SpaceX capsule that sits atop the Falcon 9 rocket.

NASA astronauts

Hurley (R) and Behnken (L)

Photo by Bill Ingalls / NASA

It won't be the Crew Dragon's first mission. Last year, SpaceX successfully sent a Crew Dragon carrying only cargo to the International Space Station. But the company has also suffered setbacks with the capsule, including thruster and parachute complications, and a 2019 explosion that occurred during testing.

If successful, Falcon 9 will launch the Dragon capsule into low Earth orbit 12 minutes after takeoff. The rocket will then begin a controlled descent to its landing site on a drone ship in the Atlantic Ocean. Hurley and Behnken will manually fly Crew Dragon toward the ISS.

When they approach the station, Crew Dragon's autonomous docking system will take over, and the capsule will connect to the station at 11:29 a.m. on Thursday. The NASA astronauts will then board the ISS, where they'll likely remain for several months. (NASA has yet to confirm the details of the return mission.)

Crew Dragon

Walkway to SpaceX's Crew Dragon atop the Falcon 9 rocket

Photo: SpaceX

In addition to being a milestone for private spaceflight, Wednesday's mission — called Demo-2 — is also the culmination of NASA's Commercial Crew Program. Started in 2010, the federally funded program aims to pair NASA with private companies — like SpaceX and Boeing — to transport astronauts to and from the ISS. The mission also represents the end of an era in which the U.S. has relied on Russia to transport American astronauts to the ISS.

"This is a unique opportunity to bring all of America together in one moment in time and say, look at how bright the future is," Jim Bridenstine, NASA's administrator, said at a news conference on Tuesday.

Here's where you can live-stream the historic launch:

American Museum of Natural History

The American Museum of Natural History will begin streaming around 11 a.m. E.T. The live-stream event will begin with curator Ruth Angus examining "the awe-inspiring leap from imagination to scientific achievement in space exploration." At 1 p.m., the museum's Director of Astrovisualization Carter Emmart and astrophysicist Jackie Faherty will take viewers on a virtual field trip to the ISS. Around 4 p.m., Hayden Planetarium Director Neil deGrasse Tyson will join Faherty and museum curator Michael Shara to provide live commentary on the launch.

NASA TV

NASA's live-streaming channel will begin covering the launch Wednesday at 12 p.m. E.T. The agency will provide live commentary, and will also show the astronauts joining the crew of the ISS after the capsule docks with the station.

SpaceX

SpaceX's YouTube channel will also live-stream the launch, though the link is not yet available. We'll update it as it comes online.

UPDATE: The SpaceX link is now active and the live-stream is scheduled to begin at 12:15 p.m.

Study: Unattractive people far overestimate their looks

The finding is remarkably similar to the Dunning-Kruger effect, which describes how incompetent people tend to overestimate their own competency.

Sex & Relationships
  • Recent studies asked participants to rate the attractiveness of themselves and other participants, who were strangers.
  • The studies kept yielding the same finding: unattractive people overestimate their attractiveness, while attractive people underrate their looks.
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Astronomers find more than 100,000 "stellar nurseries"

Every star we can see, including our sun, was born in one of these violent clouds.

Credit: NASA / ESA via Getty Images
Surprising Science

This article was originally published on our sister site, Freethink.

An international team of astronomers has conducted the biggest survey of stellar nurseries to date, charting more than 100,000 star-birthing regions across our corner of the universe.

Stellar nurseries: Outer space is filled with clouds of dust and gas called nebulae. In some of these nebulae, gravity will pull the dust and gas into clumps that eventually get so big, they collapse on themselves — and a star is born.

These star-birthing nebulae are known as stellar nurseries.

The challenge: Stars are a key part of the universe — they lead to the formation of planets and produce the elements needed to create life as we know it. A better understanding of stars, then, means a better understanding of the universe — but there's still a lot we don't know about star formation.

This is partly because it's hard to see what's going on in stellar nurseries — the clouds of dust obscure optical telescopes' view — and also because there are just so many of them that it's hard to know what the average nursery is like.

The survey: The astronomers conducted their survey of stellar nurseries using the massive ALMA telescope array in Chile. Because ALMA is a radio telescope, it captures the radio waves emanating from celestial objects, rather than the light.

"The new thing ... is that we can use ALMA to take pictures of many galaxies, and these pictures are as sharp and detailed as those taken by optical telescopes," Jiayi Sun, an Ohio State University (OSU) researcher, said in a press release.

"This just hasn't been possible before."

Over the course of the five-year survey, the group was able to chart more than 100,000 stellar nurseries across more than 90 nearby galaxies, expanding the amount of available data on the celestial objects tenfold, according to OSU researcher Adam Leroy.

New insights: The survey is already yielding new insights into stellar nurseries, including the fact that they appear to be more diverse than previously thought.

"For a long time, conventional wisdom among astronomers was that all stellar nurseries looked more or less the same," Sun said. "But with this survey we can see that this is really not the case."

"While there are some similarities, the nature and appearance of these nurseries change within and among galaxies," he continued, "just like cities or trees may vary in important ways as you go from place to place across the world."

Astronomers have also learned from the survey that stellar nurseries aren't particularly efficient at producing stars and tend to live for only 10 to 30 million years, which isn't very long on a universal scale.

Looking ahead: Data from the survey is now publicly available, so expect to see other researchers using it to make their own observations about stellar nurseries in the future.

"We have an incredible dataset here that will continue to be useful," Leroy said. "This is really a new view of galaxies and we expect to be learning from it for years to come."

Protecting space stations from deadly space debris

Tiny specks of space debris can move faster than bullets and cause way more damage. Cleaning it up is imperative.

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  • NASA estimates that more than 500,000 pieces of space trash larger than a marble are currently in orbit. Estimates exceed 128 million pieces when factoring in smaller pieces from collisions. At 17,500 MPH, even a paint chip can cause serious damage.
  • To prevent this untrackable space debris from taking out satellites and putting astronauts in danger, scientists have been working on ways to retrieve large objects before they collide and create more problems.
  • The team at Clearspace, in collaboration with the European Space Agency, is on a mission to capture one such object using an autonomous spacecraft with claw-like arms. It's an expensive and very tricky mission, but one that could have a major impact on the future of space exploration.

This is the first episode of Just Might Work, an original series by Freethink, focused on surprising solutions to our biggest problems.

Catch more Just Might Work episodes on their channel:
https://www.freethink.com/shows/just-might-work

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