Category: space

Later, he entered the Apollo program and eventually commanded the STS-2 flight of the Space Shuttle.

Here is an interview from 2004. I thought it was interesting that they used the F-104 as the chase plane and for training because the flight characteristics were so similar, which says a lot about the F-104.

Anyway, the X-15 project was a big deal for us science/geek types back when I was a kid. I wonder if it’s something today’s generation is even aware of.

Unity, attached to the belly of its carrier plane Eve, took off from runway at Spaceport America in New Mexico at 10:31 a.m. EDT (1431 GMT) and carried to an altitude of 44,562 feet (13,582 meters) over the next hour, where it was dropped and ignited its rocket engine to carry two pilots and four passengers to space and back. The mission, called Galactic 07, reached an altitude of 54.4 miles (87.5 km) and marked the seventh commercial spaceflight by Virgin Galactic on Unity, which is being retired to make way for the company’s new “Delta” class of spacecraft rolling out in 2026.

“I will need much more time to try and process what just happened,” Tuva Atasever, the Turkish Space Agency astronaut on the flight, said in a post-flight press conference, adding that the view of Earth was indescribable. “It’s not something you can describe with adjectives. It’s an experiential thing … you just feel it in your gut.”
One of the space tourists was a principal propulsion engineer at SpaceX, who wore the flags of the U.S. and India on his spacesuit to honor both his home country and that of his parents. The other two were a New York-based real estate developer and a London-based hotel and resort investment strategy advisor.

The flight landed 70 minutes later at 11:41 a.m. EDT (1541 GMT), according to the article, “marking only its seventh commercial spaceflight for Virgin Galactic and 12th crewed spaceflight overall.”

In all, Virgin Galactic flew the space plane just 32 times, including non-space test flights… “This vehicle was revolutionary,” Virgin Galactic president Mike Moses said in the post-launch press conference. “We tested it, we flew it, we demonstrated and prove to the world that commercial human spaceflight is possible with private funding for private companies… Seven commercial space flights, a single vehicle flying six times in six months last year, that’s groundbreaking,” Moses said. “The fact that we can take this vehicle back to back to back on a monthly basis is is really revolutionary.”

The new Delta class of spacecraft will be able to fly at least twice a week, about eight times the rate of SpaceShipTwo, with Virgin Galactic planning to build at least two to start its new fleet. “We’re going to field in 2026 two spaceships, our mothership Eve, that’s 750 astronauts a year going to space,” Moses said of the new fleet’s flight capacity. “That’s more than have gotten to space in the 60 year history of spaceflight to date….”

Since 2018, Virgin Galactic has flown payloads as part of NASA’s Flight Opportunities program and most recently was selected to be a contracted flight provider for NASA for the next five years.

Phys.org reports that with the Delta-class rockets, “The future of the company is at stake as it seeks at long last to get into the black. Virgin is burning through cash, losing more than $100 million in each of the past two quarters, with its reserves standing at $867 million at the end of March.”

It also laid off 185 people, or 18 percent of its workforce, late last year. Its shares are currently trading at 85 cents, down from $55 in 2021, the year Branson himself flew, garnering global headlines.

Saturday’s flight also became “a suborbital science lab” for microgravity research, according to a statement from the company.
Phys.org reports that during the flight, astronaut Atasever “wore custom headgear with brain activity monitoring sensors to collect physiological data, a dosimeter, and two commercially available insulin pens to examine the ability to administer accurate insulin doses in microgravity, Virgin said in a statement.” And Virgin Galactic said their flight also carried “rack-mounted” autonomous payloads from both Purdue (“to study propellant slosh in fuel tanks of maneuvering spacecraf”) and U.C. Berkeley (“testing a new type of 3D printing”), as well as “multiple human-tended experiments.”

“Discovery and innovation are central to our mission at Virgin Galactic,” said Michael Colglazier, CEO of Virgin Galactic. “We’re excited to build on our successful record of facilitating scientific experiments in suborbital space, and we look forward to continuing to expand our role in suborbital research going forward.”

Volcanic eruptions tinker with planetary atmospheres. One theory holds that, eons ago, several apocalyptic eruptions set off a runaway greenhouse effect on Venus, turning it from a temperate, waterlogged world into an arid desert of burned glass. To better understand its volcanism, scientists hoped to catch a Venusian eruption in the act. But although the planet is known to be smothered in volcanoes, an opaque atmosphere has prevented anyone from seeing an eruption the way spacecraft have spotted them on Io, the hypervolcanic moon of Jupiter. In the 1990s, NASA’s spacecraft Magellan used cloud-penetrating radar to survey most of the planet. But back then, the relatively low-resolution images made spotting fresh molten rock a troublesome task.

“Russia deployed this new counter space weapon into the same orbit as a U.S. government satellite,” Ryder continued. “And so assessments further indicate characteristics resembling previously deployed counter space payloads from 2019 and 2022.” Ryder added: “Obviously, that’s something that we’ll continue to monitor. Certainly, we would say that we have a responsibility to be ready to protect and defend the space domain and ensure continuous and uninterrupted support to the joint and combined force. And we’ll continue to balance the need to protect our interests in space with our desire to preserve a stable and sustainable space environment.” When asked if the Russian counter space weapon posed a threat to the U.S. satellite, Ryder responded: “Well, it’s a counter space weapon in the same orbit as a U.S. government satellite.”

American officials are trying to increase international pressure on Russia not to deploy an antisatellite nuclear weapon in space, and have obtained information that undermines Moscow’s explanation that the device it is developing is for peaceful scientific purposes, a senior State Department official said on Friday…

On Friday, Mallory Stewart, the assistant secretary of state for arms control, said that while the United States had been aware of Russia’s pursuit of such a device for years, “only recently have we been able to make a more precise assessment of their progress.” Ms. Stewart, speaking at the nonpartisan Center for Strategic and International Studies in Washington, said the orbit the Russian satellite would occupy is in a high-radiation region not used by other satellites, information that undercuts Russia’s defense that it is not developing a weapon.

But it all happened “amid U.S. intelligence-backed concerns that Moscow is trying to develop a nuclear device capable of destroying satellites.”

In February, President Joe Biden confirmed the US has intelligence that Russia is developing a nuclear anti-satellite capability. Three sources familiar with the intelligence subsequently told CNN the weapon could destroy satellites by creating a massive energy wave when detonated…

US Ambassador Linda Thomas-Greenfield said Wednesday’s vote “marks a real missed opportunity to rebuild much-needed trust in existing arms control obligations.” A US and Japan-drafted resolution had received cross-regional support from more than 60 member states. It intended to strengthen and uphold the global non-proliferation regime, including in outer space, and reaffirm the shared goal of maintaining outer space for peaceful purposes. It also called on UN member states not to develop nuclear weapons or other weapons of mass destruction designed to be placed in Earth’s orbit….

Experts say this kind of weapon could have the potential to wipe out mega constellations of small satellites, like SpaceX’s Starlink, which has been successfully used by Ukraine to counter Russian troops. This would almost certainly be “a last-ditch weapon” for Russia, the US official and other sources said — because it would do the same damage to whatever Russian satellites were also in the area.

The article notes that in March Russian President Vladimir Putin “told officials that space projects, including the setup of a nuclear power unit in space, should be a priority and receive proper financing.”

Thanks to long-time Slashdot reader schwit1 for sharing the news.

So then, as explained by RockDoctor (Slashdot reader #15,477) “they propose a number of standardised units of comparison for journalists describing ‘death from the skies'”.

An excerpt from that April 1 newsletter:
In the absence of a handy skyscraper, animals commonly used have included giraffes, corgis and an entire colony of penguins. But how do these comparisons stack up? Let’s look at some of our favourite unusual suspects:
– Corgi: At around 30 cm tall, a space rock the size of a corgi wouldn’t pose much of
a threat.
– Half a giraffe: An adult giraffe can reach up to 5.5 metres in height, so half a giraffe
would be about 2.75 metres. While not as impressive as a full skyscraper, an
asteroid that size could certainly destroy a building or two…
– Elephants: An adult African elephant can reach 7 metres at the shoulder. Ninety
elephants stacked on top of each other would form a staggering pile over 630
metres high, creating a devastating but probably not planet-ending event.

As this menagerie of animals can cause a lot of confusion, we at the NEOCC
recommend the use of a Standardised Giraffe Unit (SGU, 1 SGU = 5 penguins) for ease
of comparison.

RockDoctor shares this additional thought in his original submission about the newly proposed standardized unit.

“The world may be turtles all the way down, but it’s giraffes all the way up.”

To do this, the team needed a Rolls Royce of a digital camera. Mind you, the camera actually cost many million times that of an actual Royce Royce, and at 6,200 pounds (2,812 kilograms), it weighs a lot more than a fancy car. Each of the 21 rafts that makes up the camera’s focal plane is the price of a Maserati, and are worth every penny if they collect the sort of data scientists expect them to. “I’m personally most excited to study the expansion of the Universe using gravitational lenses to better understand Dark Energy,” said Aaron Roodman, a physicist at SLAC and lead on the camera program, in an email to Gizmodo. “That means two things: 1) measuring the brightness in all six of our filters of literally billions of galaxies and very carefully measuring their shape, which has been subtly altered by the bending of light by matter, and 2) discovering and studying very special objects where a distant quasar is almost perfectly lined up with a more nearby galaxy.”

Speaking through a SLAC release, Rodman said the camera’s images could “resolve a golf ball from around 15 miles away, while covering a swath of the sky seven times wider than the full moon.” The first images from the Rubin Observatory are slated to be publicly released in March 2025, which feels like a long way away. But several important agenda items still need to happen. For one, the SLAC team has to ship the LSST camera safely to Chile from its current lodgings in northern California. (Don’t worry — they’ve made a test run of the journey.) Then, the observatory’s mirrors need to be readied for testing and the observatory’s dome has to be completed, among some other tasks. But whenever all that is complete, the legacy survey will launch into a decade’s worth of scientific discovery. Rubin Observatory estimates suggest that LSST could “increase the number of known objects by a factor of 10,” according to a SLAC release.

The Big Ring on the Sky is 9.2 billion light-years from Earth. It has a diameter of about 1.3 billion light-years, and a circumference of about four billion light-years. If we could step outside and see it directly, the diameter of the Big Ring would need about 15 full Moons to cover it.

It is the second ultra-large structure discovered by University of Central Lancashire (UCLan) PhD student Alexia Lopez who, two years ago, also discovered the Giant Arc on the Sky. Remarkably, the Big Ring and the Giant Arc, which is 3.3 billion light-years across, are in the same cosmological neighborhood — they are seen at the same distance, at the same cosmic time, and are only 12 degrees apart on the sky. Alexia said: “Neither of these two ultra-large structures is easy to explain in our current understanding of the universe. And their ultra-large sizes, distinctive shapes, and cosmological proximity must surely be telling us something important — but what exactly?

“One possibility is that the Big Ring could be related to Baryonic Acoustic Oscillations (BAOs). BAOs arise from oscillations in the early universe and today should appear, statistically at least, as spherical shells in the arrangement of galaxies. However, detailed analysis of the Big Ring revealed it is not really compatible with the BAO explanation: the Big Ring is too large and is not spherical.” Other explanations might be needed, explanations that depart from what is generally considered to be the standard understanding in cosmology…

And if the Big Ring and the Giant Arc together form a still larger structure then the challenge to the Cosmological Principle becomes even more compelling… Alexia said, “From current cosmological theories we didn’t think structures on this scale were possible. ”

Possible explanations include a Conformal Cyclic Cosmology, or the effect of cosmic strings passing through…
Thanks to long-time Slashdot reader schwit1 for sharing the article.