visviva

Hate when my Nasic and past performance are left unpaired

The weapon you linked to is an anti ballistic missile. The difficulty is not purely in how fast the target is going, but how much it maneuvers, the duration at which it can sustain those speeds, and the altitudes at which it operates. The article addresses this early on.

Suggest changing the title to include both parts, if they fit: "Tim Cook to become Apple Executive Chairman, John Ternus to become Apple CEO"

Totally agree. Cool little project, but I cannot think of one use case where this is needed.

> But "fine" starts to feel slow when you need dense time resolution. Generating a month of ephemeris data at one-second intervals is 2.6 million propagations per satellite.

Ok, except SGP4 loses its accuracy over WAY shorter time frames than a month (think hours/days)

> Pass prediction over a ground station network might need sub-second precision across weeks.

a) sub-second ephemeris for antenna pointing is crazy overkill, and b) same comment about accuracy as above.

Impossible claim with no evidence offered - curious why this is on the front page.

It will require a number of innovations just to solve the formation flying aspect of the system, not to mention the other challenges (listed and not)... good luck with that.

There are a couple interesting-sounding claims made here but there is basically no detail to be found, which strikes me as odd at best and suspicious at worst.

I've been using Instapaper for many years to collect things to read later, and I use Pinboard to archive things that I've read and want to save.

I was kind of hoping for a deep-dive on notebook types and features, not gonna lie.

*The problem with modern software engineering

The paper in question is here: https://link.springer.com/article/10.1007/s40295-024-00458-3

It adds to a pretty large body of literature around this subject, the gist of which is "risk is going up, but we don't really have a good way of estimating what that means in terms of actual collision rates".

Astrodynamics

The most likely options are that it was struck by debris or that there was an explosion onboard. Those two are not mutually exclusive, either.

This has been an indispensable resource in my career, to the point that I will frequently search for "<topic of interest> gunter", knowing that he'll have the best collection of information available openly.

Umbra | Multiple roles | Onsite & Hybrid (Santa Barbara, Austin, Washington DC) | https://umbra.space/

Umbra builds next-generation space systems that observe the Earth in unprecedented fidelity. Our mission: Deliver global omniscience.

To stay ahead of climate change, geopolitical risk, and other major crises, we need a global understanding of what is changing, where, and how fast. Umbra is built around the idea that by providing easy access to the highest quality commercial satellite data available, we can become an indispensable tool for the growing number of organizations monitoring the Earth. We empower our customers with the ability to create the solutions that inform, inspire, and address our planet’s most pressing needs. We’re helping to create a brand new industry that has never meaningfully existed before. To make our vision a reality, we're gonna need some help.

We're looking to fill a variety of mid- to senior-level roles, including openings in Spacecraft Operations, Mission Systems Architecture, Embedded Software Engineering, and Corporate Counsel. If you're interested in helping us build, please apply at https://umbralab.bamboohr.com/careers