Category: Behind The Black

A new global map of the near-surface ice on Mars

1:51 pm

Global map of near-surface ice on Mars
Click for interactive map.

A project begun in 2019 to use all the presently available orbital data to compile a global map of the near-surface ice on Mars has now been released that global map, shown by the graphic above, taken from Figure 16.7 from the project’s science paper.

The various areas in blue show the evidence of ice down to about 5 meters, or about 15 feet, with darker blue areas indicated ice at greater depth. The study focused on latitudes below 60 degrees latitude, while also blocking out areas above one kilometer in elevation (as indicated in black on the map above). As the paper noted,
» Read more

2 comments

Giant airship gets clearance for test flights

10:45 am

A giant rigid-frame balloon airship, dubbed Pathfinder-1 and reminiscent of the airships from the early 20th century, has gotten clearance to begin flight tests at Moffett Field in California.

At 407 ft (124 m) long and 66 ft (20 m) in diameter, it’s considerably longer than the “flying buttocks” of the Airlander 10, although less than half of its width. It might not qualify as the world’s largest aircraft, but it’s still absolutely enormous, approaching twice the length of an Airbus A380.

…Currently housed in a monstrous hangar in Mountain View, California, Pathfinder 1 has already flown indoors earlier this year. According to IEEE Spectrum, the company has now been awarded the special airworthiness certificate required to fly this beast outdoors – at less than 1,500 ft (460 m) of altitude, and within the boundaries of Moffett Field and the neighboring Palo Alto Airport’s airspace.

Because of the lightweight materials being used, Pathfinder-1 will use helium, not hydrogen, to lift it. The hope is that this airship can be used to transport cargo. The project is financed by Google co-founder Sergey Brin.

5 comments

Is a recently discovered near Earth asteroid a piece from the Moon?

10:38 am

The uncertainty of science: Researchers now think they have enough information to claim that a recently discovered near Earth asteroid, dubbed Kamo`oalewa, could actually be a piece of the Moon, flung from it during a asteroid impact in the past few million years.

The 2021 study found that Kamo`oalewa’s spectrum was unlike that of other near-Earth asteroids but matched most closely that of the moon. Based on this, the team hypothesized that the asteroid could have been ejected from the lunar surface as a result of a meteoroidal impact.

In the new study, Malhotra and her team wanted to determine the feasibility for a knocked-off piece of the moon to get into this quasi-satellite orbit – a phenomenon that is quite unlikely, Malhotra said. Moon fragments that have enough kinetic energy to escape the Earth-moon system also have too much energy to land in the Earth-like orbits of quasi-satellites, she said.

With numerical simulations that accurately account for the gravitational forces of all the solar system’s planets, Malhotra’s group found that some lucky lunar fragments could actually find their way to such orbits. Kamo`oalewa could be one of those fragments created during an impact on the moon in the past few million years, according to the study.

The scientists add that the asteroid’s solar orbit, which keeps its flying in relative formation with the Earth for millions of years, strengthens this hypothesis.

It must be noted that this remains an unconfirmed hypothesis. A spacecraft would have to visit Kamo’oalewa and obtain samples to study to confirm it.

3 comments

UK awards German launch startup Rocket Factory Augsburg $4.3 million for first launch

10:32 am

The United Kingdom has given a $4.3 development grant to the German launch startup Rocket Factory Augsburg (RFA) to pay for launch preparations at the Saxavord spaceport in the Shetland Islands.

The real news from this article however is the continuing delays for anyone to launch from Great Britain. Previously the two Scottish spaceports, one in Shetland and the other in Sutherland, had anticipated the first launches in 2023, from the three companies RFA, Orbex, and ABL. Now it appears that those launches could be delayed into the middle of 2024.

RFA currently expects to launch its three-stage, 30-meter-tall RFA One rocket at some point during the three months to the end of June, recently delayed from the end of this year.

…ABL had planned to conduct its SaxaVord Spaceport launch in 2023, but has yet to announce a date for its next launch attempt anywhere after its inaugural mission from Alaska failed to reach orbit Jan. 10.

ABL is gearing up for its second launch attempt, hopefully before the end of this year, but it will do it from the Kodiak spaceport in Alaska.

One can’t help wondering if these delays are connected the red tape from UK’s Civil Aviation Authority (CAA), which delayed issuing a launch licence to Virgin Orbit so long it literally helped bankrupt the company. For example, Orbex applied for its launch license from Sutherland in January 2022, and 22 months later it apparently has still not gotten an approval from the CAA.

This grant from the UK government might be that government’s effort to keep RFA — faced with CAA delays — from switching its launch site out of Great Britain.

1 comment

No launch of Starship/Superheavy until February?

10:15 am

Superheavy still going strong, shortly after Max-Q
Superheavy still going strong, shortly after Max-Q,
during April test launch

In an email statement released on October 19, 2023 by the Fish and Wildlife Service (FWS) and reported by Bloomberg news today, FWS decided to initiate a ” a formal review of the upgrades SpaceX has made to its Starship launch system”, beginning on October 5.

Most of the Bloomberg article is behind a paywall, but the second paragraph is really the key quote:

The FWS now has as long as 135 days to create an updated biological opinion about how Starship and its launches impact the local environment, however the agency does not “expect to take the full amount of time,” a representative said in the statement.

If FWS does take the full time period, no launch can occur before February. Nor should anyone naively believe its statement that it does not expect to take the full amount of time. For example, SpaceX completed installation of its upgraded Starship/Superheavy launch system, including the water deluge equipment at its base, in early August. Why did Fish and Wildlife wait till now, almost three months later, to begin its review?
» Read more

22 comments

Russia’s Soyuz-2 rocket launches military satellite

9:40 am

Russia today used its Soyuz-2 rocket to launch a classified military surveillance satellite, lifting off from its Plesetsk spacesport in northern Russia.

A graphic at the link shows the rocket’s flight path crossed over almost all of Russia as it flew east, with its lower stages and fairings crashing on land. Though the drop zones were inside Russia, there are very isolated regions in the high Arctic latitudes, with few inhabited areas.

The leaders in the 2023 launch race:

76 SpaceX
48 China
14 Russia
7 Rocket Lab
7 India

American private enterprise still leads China 88 to 48 in successful launches, and the entire world combined 88 to 77. SpaceX by itself now trails with the rest of the world (excluding American companies) 76 to 77.

0 comments

Belén Bandera & Carla Motis – El Testament d’Amèlia

6:01 pm

An evening pause: From Wikipedia: “El testament d’Amèlia is a popular Catalan folk song. It tells the story of a young lady in her deathbed who knowingly drank the poisoned drink given to her by her stepmother, whom she knows has been sleeping with her husband.”

Hat tip Judd Clark.

1 comment

October 26, 2023 Quick space links

3:43 pm

Courtesy of BtB’s stringer Jay.

 

 

 

 

0 comments

Pushback: Fired director of college’s Diversity, Equity, and Inclusion department accuses movement of promoting bigotry

2:31 pm

Tabia Lee
Tabia Lee, fighter for freedom and a
color-blind society

They’re coming for you next: Tabia Lee, a black woman who was fired as faculty director for the Office of Equity, Social Justice, and Education [OESE] at De Anza College in California has, as promised, refused to go quietly.

As I reported in March, Lee was fired because she took the word “inclusion” literally, trying to establish a color-blind policy that would provide some aid and comfort to the Jewish students on campus who were experiencing almost daily incidents of harassment and bigotry, simply because they were Jewish.

Her reward? She was herself harassed, with some calling her a “dirty Zionist,” then denied tenure, then fired.

Since then she has not gone quietly into that good night. In July Lee suited De Anza College, as well as ten specific school officials, charging the school violated her First Amendment rights, California’s Constitution, and its Common Law in censoring and firing her.

Her name came up again this week because she wrote a blistering op-ed for the New York Post, blasting not only De Anza for its racist DEI policies, but blasting the entire “Diversity, Equity, and Inclusion” movement as nothing more that a Nazi-like movement promoting bigotry and hate.
» Read more

1 comment

The icy terrain near one of Starship’s prime candidate landing spots on Mars

1:35 pm

The icy terrain near Starship's prime landing spot on Mars
Click for original image.

Cool image time! The picture to the right, cropped to post here, was taken on August 22, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). The camera team labeled the picture a “terrain sample,” which generally means it was not taken as part of any scientist’s specific research request, but to fill a gap in the schedule so as to maintain the camera’s proper temperature. When the team needs to do this, they try to pick a location in the gap that might have some interesting features. Sometimes such pictures show relatively boring features. Sometimes the results are fascinating.

In this case the location chosen was in the northern lowland plains of Mars, in a region called Amazonis Planitia. At 38 degrees north latitude it is not surprising that the photo shows ice features. All the depressions here appear to have an eroding glacier, while the surrounding plateau resembles an untouched snow field in the very early spring, the snow beginning to sublimate away to leave the top rough and stuccoed. Note too that these depressions are likely not impact craters (they have no upraised rims and many are distorted in shape), but were likely formed by that same sublimation process.
» Read more

0 comments

New data better maps the supernova remnant SN1006

10:50 am

SN1006, as seen in X-rays
Click for original image.

Using data from both the Chandra X-ray Observatory and the Imaging X-ray Polarimetry Explorer (IXPE), scientists have now better mapped the magnetic field and the remnant from the supernova that occurred in 1006 AD.

The false color image to the right shows this data. From the caption:

The red, green, and blue elements reflect low, medium, and high energy X-rays, respectively, as detected by Chandra. The IXPE data, which measure the polarization of the X-ray light, is show in purple in the upper left corner, with the addition of lines representing the outward movement of the remnant’s magnetic field.

From the press release:

Researchers say the results demonstrate a connection between the magnetic fields and the remnant’s high-energy particle outflow. The magnetic fields in SN 1006’s shell are somewhat disorganized, per IXPE’s findings, yet still have a preferred orientation. As the shock wave from the original explosion passes through the surrounding gas, the magnetic fields become aligned with the shock wave’s motion. Charged particles are trapped by the magnetic fields around the original point of the blast, where they quickly receive bursts of acceleration. Those speeding high-energy particles, in turn, transfer energy to keep the magnetic fields strong and turbulent.

At present scientists really do not understand the behavior of stellar-sized magnetic fields. It is very complex, involving three dimensional movements that are hard to measure, as well as electromagnetic processes that are not well understood. While this new data doesn’t provide an explanation, it does tell us better what is actually happening. The theories will follow.

1 comment
1 … 478 479 480 481 482 … 2,914