HN user

tectonic

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  |   https://andrewcantino.com    |
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  |            @tectonic           |
  |  https://github.com/cantino/   |
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Posts392
Comments996
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consensus.app 1y ago

Consensus Deep Search

tectonic
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www.nature.com 1y ago

Brain is full of microplastics: are they harming you?

tectonic
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www.youtube.com 1y ago

Drone footage of the explosion of Deep Blue Nebula-1's high-altitude VTVL test [video]

tectonic
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orbitalindex.com 2y ago

Everything we're looking forward to in the space industry in 2024

tectonic
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orbitalindex.com 2y ago

China's 2030 Moon landing is taking shape

tectonic
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orbitalindex.com 3y ago

The world’s first methalox orbital launch

tectonic
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orbitalindex.com 3y ago

New Horizons might end up looking back at old horizons

tectonic
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orbitalindex.com 3y ago

Starlink V2 Minis achieve magnitude 7

tectonic
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orbitalindex.com 3y ago

SpaceX's Transporter 8

tectonic
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www.newswise.com 3y ago

Eventually everything will evaporate, not only black holes

tectonic
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orbitalindex.com 3y ago

In-space servicing, assembly, and manufacturing (ISAM) is developing rapidly

tectonic
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orbitalindex.com 3y ago

NASA has funded a bunch of early stage technologies

tectonic
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orbitalindex.com 3y ago

A China space news update

tectonic
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orbitalindex.com 3y ago

Juice will be the first mission to orbit a moon beyond Earth

tectonic
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orbitalindex.com 3y ago

Soyuz 5 Is on Ice

tectonic
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twitter.com 3y ago

Show HN: GPT4 embedded in a browser extension with the ability to use tools

tectonic
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www.straitstimes.com 3y ago

Deep-ocean circulation around Antarctica could be collapsing

tectonic
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orbitalindex.com 3y ago

Climate and Earth Observation

tectonic
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orbitalindex.com 3y ago

A radio telescope on the far side of the Moon

tectonic
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blog.andrewcantino.com 3y ago

Show HN: What can a software engineer do about climate change?

tectonic
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orbitalindex.com 3y ago

The Starship Startups

tectonic
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orbitalindex.com 3y ago

Space Is Still Hard

tectonic
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orbitalindex.com 3y ago

EU Parliament agrees to launch IRISS communications constellation

tectonic
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orbitalindex.com 3y ago

Stoke’s Unique Upper Stage

tectonic
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orbitalindex.com 3y ago

The successor to JWST has a (working) title

tectonic
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orbitalindex.com 3y ago

Everything that was on SpaceX's Transporter-6 rideshare mission

tectonic
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orbitalindex.com 3y ago

Everything that happened in space in 2022 and whats in store for 2023

tectonic
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orbitalindex.com 3y ago

Electrode-less plasma thrusters get a big bump

tectonic
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orbitalindex.com 3y ago

Ispace heads to the Moon, vying to be the first commercial Moon landing

tectonic
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orbitalindex.com 3y ago

The Quest for a Fusion Drive

tectonic
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The level of negativity in these comments is surprising. We can certainly debate whether billionaires should exist at all, but given that they do, here’s one who’s putting his money towards advancing cutting edge science instead of buying a third mega yacht. I am strongly in favor.

My laptop has stickers, one of which is a photo of my previous laptop and its stickers. One of those is a photo of the laptop before that…

I agree, soon systems of agents will be trained with good engineering practices not just locally-good code. Already when I work with current SOTA agents I find myself basically pair programming with them, providing senior guidance and cutting off directions of development that will be dead ends while they type all the actual code.

(Hey fizx!)

Me too! I learn so much about coding from that server in high school, it was definitely a formative experience, learning to code with other teens all over the country.

One likely source of FRBs are magnetars, which are just absurd objects. We wrote about them in Orbital Index a little while ago (https://orbitalindex.com/archive/2023-03-15-Issue-210/#magne...):

These highly magnetized neutron stars—objects only ~20 km in diameter—have magnetic fields that may reach up to 1015 Gauss, a quadrillion (thousand trillion) times our Sun’s pitiful 1 Gauss. The energy density of just these magnetic fields (via E=mc2) is 10,000x the mass density of lead. Magnetars are a likely source of Fast Radio Bursts and can also emit giant gamma-ray flares—one flare, GRB 200415A, was seen to emit the same amount of energy as our Sun does over 100,000 years, but in only 0.016 s. We don’t really know how these flares form, but if they involve large mass motions, they could also produce gravitational waves, something LIGO and other gravitational wave observatories are watching for. Near a magnetar, “X-ray photons readily split in two or merge. The vacuum itself is polarized, becoming strongly birefringent, like a calcite crystal. Atoms are deformed into long cylinders thinner than the quantum-relativistic de Broglie wavelength of an electron (pdf),” resulting in a breakdown of anything resembling what we think of as chemistry. It’s believed that their magnetic fields decay relatively quickly over about 10,000 years, so magnetars are a transient state. We know of about 30 magnetars so far. Oh, and they may also have volcanoes (sort of).

I think they are more drawing an analogy between the atom one or more black holes with a cloud of particles around them. Black holes are quantum mechanical and so the resulting system could behave much like an atom, including having things that look like energy levels. The universe rhymes.

NIAC awards are so fun. We write about them frequently in Orbital Index because they're crazy and weird and speculative. Here are some recent favorites:

- https://orbitalindex.com/archive/2024-05-15-Issue-269/#nasa-...

- https://orbitalindex.com/archive/2024-01-24-Issue-253/#anoth...

"A proposal for a beam of microscopic hypervelocity (>120 km/s) particles propelled by laser ablation to push spacecraft on fast transit interstellar precursor missions" is fairly representative of these types of awards. :)

This is false, if your SBSP conversion efficiency on the ground is better than solar panels on the ground then you will add less energy to earth by collecting the power in space and transmitting it to the ground then by changing the reflective albedo of desert to a very nonreflective material like solar panels.