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Cosmic Log

Amazon satellites go into orbit, boosting Starlink rivalry
A powerful rocket sent the first batch of 27 satellites for Amazon’s Project Kuiper broadband internet network into low Earth orbit today, marking a milestone in the company’s multibillion-dollar bid to catch up with SpaceX’s Starlink constellati
cosmiclog.com/2025/04/28/amazo
#GeekWire #Amazon #Broadband #ProjectKuiper #Satellites #Space #Technology #Telecommunications

Atlas V rocket launch with Project Kuiper satellites
Cosmic Log · Amazon satellites go into orbit, boosting Starlink rivalryA powerful rocket sent the first batch of 27 satellites for Amazon’s Project Kuiper broadband internet network into low Earth orbit today, marking a milestone in the company’s multibillion-dollar b…
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Dr. John Barentine FRAS

"On Monday, [AST SpaceMobile] signed a 'coordination agreement' with the US National Science Foundation. The deal calls for AST to 'implement best practices between satellite communications and ground-based optical, infrared, and radio astronomy observations.'

“'Under this agreement, AST SpaceMobile commits to collaborate closely with NSF, its major facilities, and the broader US astronomy community to mitigate any potential impact on ground-based astronomical facilities,' the company added."

pcmag.com/news/ast-spacemobile

#Space#Satellites#ASTSpaceMobile
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Dr. John Barentine FRAS

“The results presented above suggest these perceived benefits for constellations at low LEO altitudes may not be realised. The large numbers of satellites within these constellations and the extended period over which the constellations are maintained by replenishing satellites – potentially over many decades – will mean that an unstable or even runaway environment at low LEO altitudes will continue to be a possibility.”

researchgate.net/profile/Hugh-

#SpaceDebris#SpaceEnvironment#Space
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Kristijan Conkas (M0NKC)

When temporarily operating abroad, some years back on #HF it used to be common to spell "/" as a "stroke". On several occasions I operated on #hamradio #satellites and used this form too but it seemed to me to cause some confusion. I sometimes hear on air this symbol being pronounced as a "slash" (and, in one memorable instance, the operator did not pronounce it at all, simply gave the country prefix followed by their call sign). How do you spell the "/" when operating abroad?

· 0 people ·
Public
Mac Ham Radio

SatPathFinder for iOS Version 2.1.1 released

Tom Lindner (DL2RUM) has released the latest version of SatPathFinder, an application for visualizing satellite orbits. Several views are available for this. The most important data is listed in a table. Overflight times can be calculated for the next seven days.

There is a special option for radio amateurs to calculate sked times ...
machamradio.com/blog/2025/04/2

#iOS#Satellites
Public
Simon Forgues

Plus de 75 % de la superficie terrestre du Canada ne dispose pas d’infrastructures cellulaires, tout comme plus de 40 000 kilomètres de routes ne sont pas couverts par un réseau de téléphonie mobile. Une réalité que veut changer l’entreprise Terrestar Solutions grâce au déploiement d’une constellation de 66 satellites à basse altitude.

(On ne va pas bientôt manquer de ciel pour la quantité de satellites qu'on veut y mettre?) 🤔

#satellites #télécommunications

lp.ca/9ezVA5?utm_source=linked

La Presse · Grande entrevue avec Jacques Leduc, PDG de Terrestar Solutions | La connectivité pour assurer la souveraineté du paysPlus de 75 % de la superficie terrestre du Canada ne dispose pas d’infrastructures cellulaires, tout comme plus de 40 000 kilomètres de routes ne sont pas couverts par un réseau de téléphonie mobile. Une réalité que veut changer l’entreprise Terrestar Solutions grâce au déploiement d’une constellation de 66 satellites à basse altitude, un projet sur lequel Jacques Leduc, PDG et cofondateur de l’entreprise, planche depuis plusieurs années.
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