Self-Motivation
David Goggins
Former Navy Seal
Career Development
Bryan Cranston
Actor
Critical Thinking
Liv Boeree
International Poker Champion
Emotional Intelligence
Amaryllis Fox
Former CIA Clandestine Operative
Management
Chris Hadfield
Retired Canadian Astronaut & Author
Learn
from the world's big
thinkers
Start Learning

SpaceX: Starhopper soars above Texas in record-breaking test

The water tower-shaped craft is an early prototype of Starship, which SpaceX hopes will someday send humans to Mars.

The Starhopper soars 500 feet in the air.

SpaceX
  • The test marked the first time a craft used a liquid-methane-burning engine to lift itself that high.
  • The successful test paves the way for larger-scale tests of Starship prototypes.
  • SpaceX could send Starship to Mars by as early as 2024. More realistically, the company plans to use the rocket to conduct cargo missions in 2021.


Spacex successfully on Tuesday completed its highest and most difficult test of Starhopper, the early-stage prototype of the spaceship CEO Elon Musk hopes will someday transport humans to Mars and beyond.

In a video of the test at SpaceX's test site in Boca Chica, Texas, the prototype craft — which some say resembles a flying water tower — can be seen lifting itself about 500 feet in the air, hovering for about 10 seconds, and finally descending back to ground, stirring up a cloud of dust in the process.

At first glance, the test might not seem too impressive. But it marked the first time a craft used a liquid-methane-burning engine to fly that high above the ground, serving as a proof-of-concept that SpaceX can use to move forward confidently with full-scale prototypes of Starship. These prototypes — which SpaceX is calling Mk1 and Mk2 — will pave the way for future moon and Mars missions using Starship.

Starship is set to use six SpaceX Raptor engines, which are a family of methane-fueled SpaceX engines that the company plans to use on interplanetary missions. (For context: Starhopper used a single Raptor engine; Mk1 and Mk2 will probably use three each; and the "Super Heavy" rocket is set to use 35.) However, Musk said Starship's specifications might get updated after SpaceX reviews data from Tuesday's test.

As for Starhopper, Tuesday's test was its last. But although Starhopper will never make it to space, SpaceX plans to make use of the experimental craft on Earth.

"Yes, last flight for Hopper," Musk said via Twitter on Saturday. "If all goes well, it will become a vertical test stand for Raptor."

​SpaceX's Starship

Starship is set to be a 100-passenger spacecraft that will be launched off of Earth by SpaceX's Big Falcon Rocket, or "Super Heavy" rocket. But Starship is unique because it's also a rocket unto itself, one that's designed to land on and take off from distant planets all on its own. It's also unique because it's fueled by liquid methane and liquid oxygen, both of which are gasses that could theoretically be produced on other planets and used to refuel the craft.

What's next for Starship? It's hard to say exactly — in part because Musk is known for setting aspirational timelines — but, based on the company's statements, you might expect to see Starship:

Even if SpaceX doesn't send humans to Mars by 2026, Musk is confident Starship will get the job done someday.

Live on Tuesday | Personal finance in the COVID-19 era

Sallie Krawcheck and Bob Kulhan will be talking money, jobs, and how the pandemic will disproportionally affect women's finances.

Masturbation boosts your immune system, helping you fight off infection and illness

Can an orgasm a day really keep the doctor away?

Sexual arousal and orgasm increase the number of white blood cells in the body, making it easier to fight infection and illness.

Image by Yurchanka Siarhei on Shutterstock
Sex & Relationships
  • Achieving orgasm through masturbation provides a rush of feel-good hormones (such as dopamine, serotonin and oxytocin) and can re-balance our levels of cortisol (a stress-inducing hormone). This helps our immune system function at a higher level.
  • The surge in "feel-good" hormones also promotes a more relaxed and calm state of being, making it easier to achieve restful sleep, which is a critical part in maintaining a high-functioning immune system.
  • Just as bad habits can slow your immune system, positive habits (such as a healthy sleep schedule and active sex life) can help boost your immune system which can prevent you from becoming sick.
Keep reading Show less

Education vs. learning: How semantics can trigger a mind shift

The word "learning" opens up space for more people, places, and ideas.

Education vs. learning: How semantics can trigger a mind shift | Gregg ...
Future of Learning
  • The terms 'education' and 'learning' are often used interchangeably, but there is a cultural connotation to the former that can be limiting. Education naturally links to schooling, which is only one form of learning.
  • Gregg Behr, founder and co-chair of Remake Learning, believes that this small word shift opens up the possibilities in terms of how and where learning can happen. It also becomes a more inclusive practice, welcoming in a larger, more diverse group of thinkers.
  • Post-COVID, the way we think about what learning looks like will inevitably change, so it's crucial to adjust and begin building the necessary support systems today.
Keep reading Show less

Why is everyone so selfish? Science explains

The coronavirus pandemic has brought out the perception of selfishness among many.

Credit: Adobe Stock, Olivier Le Moal.
Personal Growth
  • Selfish behavior has been analyzed by philosophers and psychologists for centuries.
  • New research shows people may be wired for altruistic behavior and get more benefits from it.
  • Crisis times tend to increase self-centered acts.
Keep reading Show less
Culture & Religion

How Hemingway felt about fatherhood

Parenting could be a distraction from what mattered most to him: his writing.

Scroll down to load more…
Quantcast