Amazon’s Project Kuiper is Underway

Posted on by onespaceman2000
Image (Credit): Launch of the Amazon Project Kuiper prototypes from Cape Canaveral. (Amazon)

If you were worried about satellite traffic and its impact on astronomy, then you have one more thing to worry about. Yesterday, two prototype satellites were launched aboard an Atlas V rocket from the Cape Canaveral Space Force Station. They are part of Amazon’s Project Kuiper, which may lead to 3,200 additional satellites orbiting the Earth.

So what is Project Kuiper? Amazon explains it this way:

Project Kuiper is an initiative to increase global broadband access through a constellation of 3,236 satellites in low Earth orbit (LEO). Its mission is to bring fast, affordable broadband to unserved and underserved communities around the world.

Sounds a lot like SpaceX’s Starlink, doesn’t it? And plenty more similar projects are being planned by the Chinese and others.

It does make you wonder whether there is a better way. I understand the nationals security complications with satellites, but thousands upon thousands of satellites circling the Earth to provide similar Internet services to customers sounds wasteful, dangerous, and bothersome to astronomy. I liked it better when the wires were running under the seas or underground. This new approach will be a mess.

The Government Accountability Office issued a report last year highlighting some of the risks and mitigation ideas:

  • Increase in orbital debris. Debris in space can damage or destroy satellites, affecting commercial services, scientific observation, and national security. Better characterizing debris, increasing adherence to operational guidelines, and removing debris are among the possible mitigations, but achieving these is challenging.
  • Emissions into the upper atmosphere. Rocket launches and satellite reentries produce particles and gases that can affect atmospheric temperatures and deplete the ozone layer. Limiting use of rocket engines that produce certain harmful emissions could mitigate the effects. However, the size and significance of these effects are poorly understood due to a lack of observational data, and it is not yet clear if mitigation is warranted.
  • Disruption of astronomy. Satellites can reflect sunlight and transmit radio signals that obstruct observations of natural phenomena. Satellite operators and astronomers are beginning to explore ways of mitigating these effects with technologies to darken satellites, and with tools to help astronomers avoid or filter out light reflections or radio transmissions. However, the efficacy of these techniques remains in question, and astronomers need more data about the satellites to improve mitigations.

The report has a lot of good information, but I am not sure Amazon, SpaceX, or the Chinese will be paying any attention until a world body gets involved. National regulation will not be enough.

More likely than not, as with many of these areas in need of regulation, we are just one major accident away from new rules.

Space Quote: Astronomers Have a New Term – JuMBOs

Posted on by onespaceman2000
Image (Credit): Image of Jupiter taken by the Hubble Space Telescope. (Amy A. Simon/NASA/European Space Agency)

“We find them down as small as one Jupiter mass, even half a Jupiter mass, floating freely, not attached to a star…Physics says you can’t even make objects that small. We wanted to see, can we break physics? And I think we have, which is good.”

–Statement by Mark McCaughrean, a senior adviser for science and exploration at the European Space Agency, regarding Jupiter Mass Binary Objects (JuMBO). These objects were spotted by the James Webb Space Telescope in the Orion Nebula. They may be a new astronomical body as they do not fit into the normal star or planet category.

Pic of the Week: Dusty Spiral Arms of NGC 1087

Posted on by onespaceman2000
Image (Credit): NGC 1087 as captured by the Hubble Space Telescope. (Space Telescope Science Institute and Gladys Kober, NASA/Catholic University of America)

This week’s image comes from the NASA/ESA Hubble Space Telescope.  It is an image of the grainy-textured, colorful barred spiral galaxy NGC 1087, which is about 80 million light-years away.

Here is more about the galaxy from NASA:

It has a diameter of 87,000 light-years and a very small nucleus, or center. The galaxy’s dust lanes, seen in dark red, help define its spiral structure. NGC 1087’s stellar bar – the elongated, bright-white structure at the galaxy’s center – is also shorter compared to other barred galaxies. Typically, in barred galaxies, the gravity of the center pulls in large quantities of gas, causing a burst of star formation followed by a slow decay. Uniquely, NGC 1087 shows signs of new star formation, making it of special interest to scientists.

British astronomer William Herschel discovered NGC 1087 in 1785. The galaxy sits just south of the celestial equator, making it visible from both hemispheres. In 1995, astronomers discovered a Type II supernova within this galaxy. Type II supernovae occur when a massive star uses all of its nuclear fuel and its iron core collapses, then explodes. Named 1995V, it is the only supernova ever seen in this galaxy.

In this new ultraviolet, visible, and near-infrared light image from NASA’s Hubble Space Telescope, the dark red streaks are cold molecular gas, the raw material from which stars form. The spots of bright pink signal areas where new stars are forming, characterized by the presence of ionized hydrogen, oxygen, and sulfur. The bluer regions hold hot, young stars formed earlier in the lifetime of this galaxy. Hubble observed NGC 1087 to study the connection between young stars and cold gas, and especially to determine what happens to gaseous regions after stars are formed within them.

Satellite News: Otter Pup to the Rescue

Posted on by onespaceman2000
Credit: Starfish Space

Things are looking up for the satellite business. That is, things should shortly be coming down from space that no longer need to be there, and that is a good thing. And Starfish Space hopes to be the one to bring down those satellites.

Here is the story. Starfish Space has created the electric-propulsion Otter Pup prototype spacecraft to act as a tug boat in space that can safely nudge old satellites and debris out of orbit. This will be the basis for the commercially-available Otter spacecraft in the near future. The mission of this spacecraft could also be expanded to serve as a “robotic repair crew.”

It sounds so promising that NASA has awarded the company with a contract to expand its work in this area.

This is good news for anyone concerned about the growing amount of traffic and debris in low-Earth orbit. We have no problem tossing things into space, but we have not given enough thought to what happens later. The Otter Pup is a step in the right direction.

Note: You can see a July 2022 Starfish Space presentation to NASA about the Otter spacecraft here.

Image (Credit): The Otter Pup prototype spacecraft . (Starfish Space)