Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog

Category: space travel – Page 459

Space-based solar power has had a slow start, but the technology may finally take off in the next few decades. Since its inception, solar power has had a severe limitation as a renewable energy: it only works when the Sun is shining. This has restricted the areas where solar panels can be effectively used to sunnier, drier regions, such as California and Arizona. And even on cloudless days, the atmosphere itself absorbs some of the energy emitted by the Sun, cutting back the efficiency of solar energy. And let’s not forget that, even in the best of circumstances, Earth-bound solar panels are pointed away from the Sun half of the time, during the night.

So, for over half a decade, researchers from NASA and the Pentagon have dreamed of ways for solar panels to rise above these difficulties, and have come up with some plausible solutions. There have been several proposals for making extra-atmospheric solar panels a reality, many of which call for a spacecraft equipped with an array of mirrors to reflect sunlight into a power-conversion device. The collected energy could be beamed to Earth via a laser or microwave emitter. There are even ways to modulate the waves’ energy to protect any birds or planes that might wander into the beam’s path.

The energy from these space-based solar panels would not be limited by clouds, the atmosphere, or our night cycle. Additionally, because solar energy would be continuously absorbed, there would be no reason to store the energy for later use, a process which can cost up to 50 percent of the energy stored.

Read more

The term “moonshot” is sometimes invoked to denote a project so outrageously ambitious that it can only be described by comparing it to the Apollo 11 mission to land the first human on the Moon. The Breakthrough Starshot Initiative transcends the moonshot descriptor because its purpose goes far beyond the Moon. The aptly-named project seeks to travel to the nearest stars.

The brainchild of Russian-born tech entrepreneur billionaire Yuri Milner, Breakthrough Starshot was announced in April 2016 at a press conference joined by renowned physicists including Stephen Hawking and Freeman Dyson. While still early, the current vision is that thousands of wafer-sized chips attached to large, silver lightsails will be placed into Earth orbit and accelerated by the pressure of an intense Earth-based laser hitting the lightsail.

Read more

Elon Musk’s paper on, available for free below.

This paper is a summary of Elon Musk’s presentation at the 67th International Astronautical Congress in Guadalajara, Mexico, September 26–30, 2016. In February 2017, SpaceX announced it will launch a crewed mission beyond the moon for two private customers in late 2018.

Used with permission from SpaceX.

By talking about the SpaceX Mars architecture, I want to make Mars seem possible—make it seem as though it is something that we can do in our lifetime. There really is a way that anyone could go if they wanted to.

Read more

We are incredibly excited to announce that Firmamentum, a division of Tethers Unlimited, Inc. (TUI), has signed a contract with the Defense Advanced Research Projects Agency (DARPA) to develop a system that will use in-space manufacturing and robotic assembly technologies to construct on orbit a small satellite able to provide high-bandwidth satellite communications (SATCOM) services to mobile receivers on the ground.

Under the OrbWeaver Direct-to-Phase-II Small Business Innovation Research (SBIR) effort, Firmamentum aims to combine its technologies for in-space recycling, in-space manufacturing, and robotic assembly to create a system that could launch as a secondary payload on an Evolved Expendable Launch Vehicle (EELV). This system would recycle a structural element of that rocket, known as an EELV Secondary Payload Adapter (ESPA) ring, by converting the ring’s aluminum material into a very large, high-precision antenna reflector. The OrbWeaver™ payload would then attach this large antenna to an array of TUI’s SWIFT® software defined radios launched with the OrbWeaver payload to create a small satellite capable of delivering up to 12 gigabits per second of data to K-band very small aperture terminals (VSAT) on the ground.

Read more

Fusion-powered rockets that are only the size of a few refrigerators could one day help propel spacecraft at high speeds to nearby planets or even other stars, a NASA-funded spaceflight company says.

Another use for such fusion rockets is to deflect asteroids that might strike Earth and to build manned bases on the moon and Mars, the researchers say.

Rockets fly by hurling materials known as propellants away from them. Conventional rockets that rely on chemical reactions are not very efficient when it comes to how much thrust they generate, given the amount of propellant they carry, which has led rocket scientists to explore a variety of alternatives over the years. [Superfast Spacecraft Propulsion Concepts (Images)].

Read more

What’s wrong with this illustration of the planets in our solar system? »

For one thing, it suggests that the planets line up for photos on the same solar ray, just like baby ducks in a row. That’s a pretty rare occurrence—perhaps once in several billion years. In fact, Pluto doesn’t even orbit on the same plane as the planets. Its orbit is tilted 17 degrees. So, forget it lining up with anything, except on rare occasions, when it crosses the equatorial plane. On that day, you might get it to line up with one or two planets.

But what about scale? Space is so vast. Perhaps our solar system looks like this ↓

No such luck! Stars and planets do not fill a significant volume of the void. They are lonely specs in the great enveloping cosmic dark.* Space is mostly filled with—well—space! Lots and lots of it. In fact, if Pluto and our own moon were represented by just a single pixel on your computer screen, you wouldn’t see anything around it. Even if you daisy chain a few hundred computer screens, you will not discern the outer planets. They are just too far away.

Josh Worth has created an interactive map of our solar system. For convenience, it also assumes that planets are lined up like ducks. But the relative sizes and distance between planets are accurate. Prepare to change your view of the cosmos…

1/7 the way to Pluto. I enlarged Jupiter’s moons. On a full-screen view, they are barely visible.

Just swipe your finger from the right edge of the screen to move away from the sun. Despite a fascinating experience (and many cute, provocative Easter eggs hidden between the planets), few readers swipe all the way out to Pluto and the author credits. On my high-resolution monitor, it requires more than a thousand swipes. Imagine if the Moon had been more than 1 pixel…It would take a long, long time! I would rather go out to dinner and a movie. But I urge you to travel at least to Jupiter. At 1/7 of the trip to Pluto, it should take less than 5 minutes.

On this scale, you won’t see the 1½ or 2 million asteroids between Mars and Jupiter. They aren’t large enough to merit a pixel. As Josh states, “Most space charts leave out the most significant part – all the space.” (an Easter egg at 1.12 billion km on the map).

* I borrowed this phrase from my former Cornell professor, Carl Sagan. He uses it in Pale Blue Dot [timestamp 2:14.]. This video tribute became a touchstone in my life; even more than having Sagan as a professor and mentor.

If you view it, be sure to also view Consider Again, Sagan’s follow-up in the video below. It is a thought-provoking observation of human-chauvinism throughout history—even among ancient Greeks. Carl isn’t the first atheist, of course. But he is eloquent in describing mankind’s ego trip: The delusion of a privileged place in the universe, or the religious depiction of God and his relationship with our species.

Related:

Credit: ▪ Josh Worth and Sachin Gadhave who offers an illustrative answer at Quora.com

Philip Raymond co-chairs Crypsa & Bitcoin Event, columnist & board member at Lifeboat, editor
at WildDuck and will deliver the keynote address at Digital Currency Summit in Johannesburg.

Clement Balavoine might just be what Elon Musk ordered. The Frenchman is still only 25 years old, passionate about design, traveled the (fashion) world and gravitates towards his own Mars experience with his new company Neuro. In his own words, he wants to create a label that reflects the future of the industry.

SpaceX on the other hand, is looking for innovation on so many levels on their ongoing mission to establish our first Mars colony. To get there, Elon Musk proposed the so-called Interplanetary Transport System (ITS) that combines our latest rocket technology with a space-carrier able to ship at least 100 but hopefully close to 200 passengers on each flight.

Of course, getting to Mars is an adventure that needs problem-solving skills and technology that we might not even think of yet. To better be safe than sorry, Balavoine’s new kind of spacesuit comes in handy, destined to protect our pioneering crew from bone loss, muscle atrophy and, hopefully, radiation.

Read more