The Saturn V (left) and the Falcon Heavy (right). Credit: NASA/SpaceX
I always remember hearing the comparison of how the Space Shuttle’s main engines would drain an average family swimming pool in under 25 seconds. Or that the Saturn V used the equivalent of 763 elephants of fuel. But just how much fuel does a rocket burn during its ascent to orbit? As you might expect, the amount varies with different rockets.
A great new video provides an incredible visual of how much fuel is burned by four different rockets, from launch to the various stage separations by showing what rocket launches would look like if the rockets were completely transparent.
In March of 2019, NASA was directed by the White House to land human beings on the Moon within five years. Known as Project Artemis, this expedited timeline has led to a number of changes and shakeups at NASA, not the least of which has to do with the deprioritizing of certain elements. Nowhere is this more clear than with the Lunar Gateway, an orbital habitat that NASA will be deploying to cislunar space in the coming years.
Originally, the Gateway was a crucial part of the agency’s plan to create a program of “sustainable lunar exploration.” In March of this year, NASA announced that the Lunar Gateway is no longer a priority and that Artemis will rely on an integrated lunar lander instead. However, NASA still hopes to build the Gateway, and according to a recent interview with ArsTechnica, this could be done with the help of SpaceX and the Falcon Heavy.
In May of 2019, Elon Musk began delivering on his promise to create a constellation of satellites (named Starlink) that would offer broadband internet access. It all started with the launch of the first sixty Starlink satellites and was followed by Musk sending the inaugural tweet using the service this past October. Earlier today, another batch of Starlink satellites was sent into space as part of a live-streamed launch event.
The mission, known as Starlink-1, saw the launch of another 60 satellites from Space Launch Complex 40 at Cape Canaveral Air Force Station, Florida, atop a Falcon 9rocket. Unlike previous launches, this mission involved the latest version of Starlink (Starlink 1.0), which feature a number of upgrades and refinements over the previous version (Starlink 0.9) and made this mission the heaviest Starlink launch to date.
The Falcon Heavy STP-2 mission launched from Kennedy Space Center on Tuesday, June 25, 2019. Image Credit: Alex Brock
Instagram: @alexhbrock, Website: www.alexhbrock.com
In what Elon Musk is calling their “most difficult” mission so far, SpaceX launched the Falcon Heavy rocket for the third time. The launch took place at 2:30 am ET Tuesday from a launch pad at Kennedy Space Center in Florida. The mission was called STP-2, and Universe Today sent a photographer to capture all the action.
An illustration of the Light Sail 2 craft with its solar sails deployed. Image Credit: Josh Spradling / The Planetary Society
The Planetary Society is going to launch their LightSail 2 CubeSat next month. LightSail 2 is a test mission designed to study the feasibility of using sunlight for propulsion. The small satellite will use the pressure of sunlight on its solar sails to propel its way to a higher orbit.
The first commercial launch (and second successful launch) of the SpaceX Falcon Heavy. Credit: SpaceX
SpaceX has made some amazing accomplishments in the past few years, all of which have been in keeping with Elon Musk’s promise to cut the costs of space exploration. And with all the excitement surrounding the Starship Hopper and its first hop tests, there was one very important accomplishment that seems to have faded into the background a little.
Luckily, SpaceX reminded everyone about it this week, as the company conducted the second successful launch of their Falcon Heavy rocket from NASA’s Kennedy Space Center. But what was especially impressive this time around is the fact that they managed to retrieve all three of the Falcon Heavy’s rocket boosters, as well as the payload fairings.
Artist's impression of the ITS (BFR) conducting a service run to the ISS. Credit: SpaceX
In September of 2016, Elon Musk announced the latest addition to the SpaceX rocket family. Known then as the Interplanetary Transport System (ITS) – now know as the Big Falcon Rocket (BFR) – this massive launch vehicle is central to Musk’s vision of sending astronauts and colonists to Mars someday. Since that time, the space community has eagerly waited for any news on how the preparations for this rocket are going.
Musk further inflamed people’s anticipation by recently announcing that the BFR would be ready to conduct orbital flights by as early as 2020. While admittedly an optimistic deadline, Musk indicated that his company was building the presently building the ship. And according to a recent post on Musk’s Instagram account, a key component (the main body tool) for making the BFR interplanetary spaceship has just been completed.
It is important to note, however, that what is being shown here is not actually a part of the rocket. As Ryan Whitwam of Extreme Tech noted, what we are seeing in the post is a tool “that SpaceX will use to fabricate the rocket from carbon fiber composite materials that are lighter than traditional materials. Flexible resin sheets of carbon fiber will be layered on the tool and then heated to cure them. After heating, you’re left with a solid section of rocket fuselage. It’s essentially a carbon fiber jig.”
https://www.instagram.com/p/BhVk3y3A0yB/?hl=en
Nevertheless, from the size of the tool itself, one gets a pretty clear idea of how large the final rocket will be. SpaceX chose to illustrate the scale of the tool by placing a Tesla next to it for scale. For some additional perspective, consider the cherry Tesla Roadster (driven by Starman) SpaceX launched with the Falcon Heavy‘s maiden flight.
Whereas the payload capsule was barely large enough to house it, this car looks like it could fit inside any rocket turned out by this tool easily, and with plenty of room to spare. And while cars are not exactly the BFR’s intended payload, it is good to know that it will be no slouch in that department!
When completed, the BFR will be the largest and most powerful rocket in the SpaceX rocket family. According to the company’s own specifications, it will measure 106 meters (348 ft) in height and 9 meters (30 ft) in diameter and will be able to deliver a payload of 150,000 kg (330,000 lb) to Low-Earth Orbit (LEO) – almost two and a half times the payload of the Falcon Heavy (63,800 kg; 140,660 lb).
And as Musk indicated during an interview with Jonathon Nolan at the 2018 South by Southwest Conference (SXSW) in Austin, Texas, it will even outpace the rockets that won the Space Race for the US:
“This a very big booster and ship. The liftoff thrust of this would be about twice that of a Saturn V (the rockets that sent the Apollo astronauts to the Moon). So it’s capable of doing 150 metric tons to orbit and be fully reusable. So the expendable payload is about double that number.”
Once completed, Musk hopes to see the BFR performing service missions to Low-Earth Orbit (LEO), the International Space Station, to the Moon, and – of course – to Mars. In addition to sending colonists there as early as the next decade, Musk has also expressed interest in using the BFR to conduct space tourism – flying passengers in luxury accommodations to the Red Planet and back.
In the end, it is clear that Musk and the company he founded for the purpose of reigniting space exploration are determined to make all of this happen. In the coming years, it will be interesting to see how far and how fast they progress.
The Falcon Heavy's first flight. Each time the Heavy lifts off, it uses roughly 440 tons of fuel. Image: SpaceX
The launch of the Falcon Heavy , which took place on Feb. 6th, 2018, was an historic event. After years of preparation, SpaceX successfully launched the heaviest vehicle in its arsenal, which has a lift capacity that is over twice as much as the next heaviest rocket (the United Launch Alliance’s Delta IV Heavy). The launch also demonstrated SpaceX’s commitment to reusability, where two of the three cores were recovered afterwards.
In addition, the launch was a media frenzy as the heavy rocket deployed some very unusual cargo – a Tesla Roadster with Starman (an empty spacesuit) in the driver’s seat. In honor of this event, the company has released a video that showcases the highlights of the launch. Consistent with the theme of the launch, the video was set to David Bowie’s 1971 hit “Life on Mars”, and is quite emotional to watch!
The Tesla Roadster and its pilot “Starman” leaving Earth behind. Image: SpaceX
The video begins by showing the crowds assembled outside of SpaceX’s launch site at Space Complex 39A at Cape Canaveral, Florida. We then see Elon Musk’s Tesla Roadster and Starman being loaded aboard the Falcon Heavy payload capsule. What follows is the rollout of the Falcon Heavy at Cape Canaveral, its deployment on the launch pad, and the rocket blasting off.
This is where things get emotional as Bowie’s song hits a crescendo and people on the ground and in the launch complex celebrate the successful launch. We are also treated to some footage of Starman and the Roadster being deployed once they reach orbit. As Starman floats in full view of Earth, we also see the successful recovery of two of the Falcon 9 cores, and the crashing at sea of the third.
While the video manages to cover all the major aspects of the launch, the real focus is definitely on the people who witnessed the event. As the video plays, you can see the anticipation and hope as the rocket is preparing for launch and the sense of elation that came from its success. This is in keeping with Elon Musk’s vision for SpaceX, which he founded in 2002 to inspire public interest in renewed space exploration.
Why Falcon Heavy & Starman?
Life cannot just be about solving one sad problem after another. There need to be things that inspire you, that make you glad to wake up in the morning and be part of humanity. That is why we did it. We did for you. https://t.co/5STO7q4wro
“Life cannot just be about solving one sad problem after another. There need to be things that inspire you, that make you glad to wake up in the morning and be part of humanity. That is why we did it. We did for you.”
Of course, one can’t forget how the launch also signaled that SpaceX is one step closer to achieving Musk’s other dream – which is to reduce the cost associated with space launches by making rockets fully reusable and restoring domestic launch capability to the United States. Now that SpaceX is capable of lifting 64 metric tons (141,000 lbs), NASA won’t have to depend on Roscosmos to send crews and heavy payloads into orbit much longer.
The Tesla Roadster sent into space aboard the Falcon Heavy Rocket in early February. Is it teeming with Earthly bacteria? Image: SpaceX
A great celebratory eruption accompanied the successful launch of SpaceX’s Falcon Heavy rocket in early February. That launch was a big moment for people who are thoughtful about the long arc of humanity’s future. But the Tesla Roadster that was sent on a long voyage in space aboard that rocket is likely carrying some bacterial hitch-hikers.
The Falcon Heavy’s first flight. Image: SpaceX
A report from Purdue University suggests that, though unlikely, the Roadster may be carrying an unwelcome cargo of Earthly bacteria to any destination it reaches. But we’re talking science here, and science doesn’t necessarily shy away from the unlikely.
“The load of bacteria on the Tesla could be considered a biothreat, or a backup copy of life on Earth.” – Alina Alexeenko, Professor of Aeronautics and Astronautics at Purdue University.
NASA takes spacecraft microbial contamination very seriously. The Office of Planetary Protection monitors and enforces spacecraft sterilization. Spreading Terran bacteria to other worlds is a no-no, for obvious reasons, so spacecraft are routinely sterilized to prevent any bacterial hitch-hikers. NASA uses the term “biological burden” to quantify how rigorously a spacecraft needs to be sterilized. Depending on a spacecraft’s mission and destination, the craft is subjected to increasingly stringent sterilization procedures.
If a craft is not likely to ever contact another body, then sterilization isn’t as strict. If the target is a place like Mars, where the presence of Martian life is undetermined, then the craft is prepared differently. When required, spacecraft and spacecraft components are treated in clean rooms like the one at Goddard Space Flight Center.
The clean room at Goddard Space Flight Center where spacecraft are sterilized. Image: NASA
The clean rooms are strictly controlled environments, where staff wear protective suits, boots, hoodies, and surgical gloves. The air is filtered and the spacecraft are exposed to various types of sterilization. After sterilization, the spacecraft is handled carefully before launch to ensure it remains sterile. But the Tesla Roadster never visited such a place, since it’s destination is not another body.
The Tesla Roadster in space was certainly manufactured in a clean place, but there’s a big difference between clean and sterile. To use NASA’s terminology, the bacterial load of the Roadster is probably very high. But would those bacteria survive?
The atmosphere in space is most definitely hostile to life. The temperature extremes, the low pressure, and the radiation are all hazardous. But, some bacteria could survive by going dormant, and there are nooks and crannies in the Tesla where life could cling.
This images shows the Orion capsule wrapped in plastic after sterilization, and being moved to a workstand. These types of precautions are mandated by NASA’s Office of Planetary Protection. Image: NASA.
The Tesla is not predicted to come into contact with any other body, and certainly not Mars, which is definitely a destination in our Solar System that we want to protect from contamination. In fact, a more likely eventual destination for the Roadster is Earth, albeit millions of years from now. And in that case, according to Alina Alexeenko, a Professor of Aeronautics and Astronautics at Purdue University, any bacteria on the red Roadster is more like a back-up for life on Earth, in case we do something stupid before the car returns. “The load of bacteria on the Tesla could be considered a biothreat, or a backup copy of life on Earth,” she said.
But even if some bacteria survived for a while in some hidden recess somewhere on the Tesla Roadster, could it realistically survive for millions of years in space?
As far as NASA is concerned, length of time in space is one component of sterilization. Some missions are designed with the craft placed in a long-term orbit at the end of its mission, so that the space environment can eventually destroy any lingering bacterial life secreted away somewhere. Surely, if the Roadster does ever collide with Earth, and if it takes millions of years for that to happen, and if it’s not destroyed on re-entry, the car would be sterilized by its long-duration journey?
That seems to be the far more likely outcome. You never know for sure, but the space-faring Roadster is probably not a hazardous bio-threat, nor a back-up for life on Earth; those are pretty fanciful ideas.
Musk’s pretty red car is likely just a harmless, attention-grabbing bauble.
The vast majority of rockets are multi-staged affairs. Why is this? What makes this kind of rocket so successful? Today we look at the ins and outs of multi-stage rockets.
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