from the world's big
Math can become intuitive with a little practice.
- Engineering is the foundation of society, from physical infrastructure to every device in your possession.
- Electrical engineering is one of the most in-demand occupations in the technological age.
- The Mathematics for Engineers Prep Bundle teaches you how to think like an engineer.
Solar geoengineering ideas could weaken storms in both hemispheres, scientists find.
SpaceX's momentous Crew Dragon launch is a sign of things to come for the space industry, and humanity's future.
- SpaceX was founded in 2002 and was an industry joke for many years. Eighteen years later, it is the first private company to launch astronauts to the International Space Station.
- Today, SpaceX's Crew Dragon launched NASA astronauts Bob Behnken and Doug Hurley to the ISS. The journey will take about 19 hours.
- Dylan Taylor, chairman and CEO of Voyager Space Holdings, looks at SpaceX's journey from startup to a commercial space company with the operating power of a nation-state.
NASA astronauts Bob Behnken and Doug Hurley
The humblest of beginnings<p>SpaceX was an inside joke for many in the space industry establishment even years after its founding. Its first three launches famously and spectacularly failed, leading to not only snickers among the industry elite, but stressing SpaceX and its founder, Elon Musk, down to literally their last dollar. <a href="https://www.cnbc.com/2017/09/29/elon-musk-9-years-ago-spacex-nearly-failed-itself-out-of-existence.html" target="_blank">As Musk has related several times</a>, SpaceX's fourth launch was a "make or break." Had it failed, the company would have filed for bankruptcy. Thankfully, that launch was successful and SpaceX has really never looked back. The industry insiders who doubt SpaceX still exist, but their snickers have turned to more nuanced criticism, including that SpaceX unfairly benefits from government contracting. Which is ironic for an industry that has been built on a defense contracting model. The truth is, SpaceX has made space cool again. One only needs to compare its rocket launch telecasts with those of their competitors. One has Hollywood-level production quality and attracts over <a href="https://www.theverge.com/2018/2/6/16981730/spacex-falcon-heavy-launch-youtube-live-stream-record" target="_blank">1 million live viewers per launch</a> and the others seem dated, uninspired and draw 25,000 viewers on their best day. This has led to SpaceX being one of the employers of choice in the space industry, despite its legendary long hours and difficult working environment. Attracting top talent has been one of the reasons SpaceX has been able to achieve its miraculous product success.</p>
A big bet<p>Once SpaceX learned to launch rockets, Musk's product vision became more futuristic. Just like it doesn't make sense to fly a <a href="https://en.wikipedia.org/wiki/Airbus_A380" target="_blank">$400M</a> Airbus 380 from Dubai to Los Angeles only to throw the airplane away after landing, Musk challenged the industry to reuse its rocket boosters. This vision was <a href="https://blog.spexcast.com/spacex-develop-resuable-rockets/" target="_blank">audacious</a> and was faced with massive skepticism in the industry. Despite this, SpaceX stuck its first landing of a <a href="https://www.youtube.com/watch?v=lEr9cPpuAx8" target="_blank">single rocket booster</a> on April 8, 2016. Stuck its first <a href="https://www.youtube.com/watch?v=V3dvELj9kkU" target="_blank">dual rocket booster</a> landing on February 6, 2018 and even stuck a <a href="https://www.youtube.com/watch?v=HVqWEoyiaBA" target="_blank">triple landing</a> on April 12, 2019. It has now landed 49 out of its last 51 attempts. This has literally changed the game in terms of both launch costs, but also cycle time (the amount of time needed between launches). It is a game changer that will be further stretched when the potentially revolutionary heavy rocket <a href="https://www.spacex.com/vehicles/starship/" target="_blank">Starship</a> is rolled out sometime in the next year. In addition to the boosters, SpaceX also recovers other parts from the launch including the fairing, which houses the actual payload of the launch.</p>
NASA astronauts Bob Behnken and Doug Hurley inside Crew Dragon.
Criticism and triumph<p>Elon Musk has his critics, and certainly he has his lieutenants who do not get enough credit for their impact on SpaceX's achievements, such a SpaceX president Gwynne Shotwell, but, regardless, it is indisputable that SpaceX has achieved a level of capability that is truly shocking in a relativity short period of time. Should SpaceX be celebrated for its persistence, entrepreneurism, innovation and ultimate value creation? Without question. Is SpaceX finished pushing boundaries and achieving what others thought was impossible? Not even close. If Musk stays healthy and avoids a Howard Hughes moment, as many fear, it is hard to doubt his ability to make his dream of landing humans on Mars a reality within his next 18 years (if not sooner).</p>
The Crew Dragon demonstration of the launch escape system.
An MIT system uses wireless signals to measure in-home appliance usage to better understand health tendencies.
For many of us, our microwaves and dishwashers aren't the first thing that come to mind when trying to glean health information, beyond that we should (maybe) lay off the Hot Pockets and empty the dishes in a timely way.
Learn to understand the foundations of modern life and even launch a new career.
- Electrical engineering is the study, design, and application of systems that utilize electricity and electronics.
- Modern applications include power grids, telecommunications, and circuit boards.
- Computing systems such as supercomputers and tablets rely on electrical engineering.