Mastodawn

A real insight into what’s out there. They missed the whole point of your posts and the insightful messages you had for them.

Terry Dactil Feb 27

Mikko Tuomi Feb 27

Over the past few years, the number of #satellite launches has skyrocketed.

There are now nearly 15 000 active #satellites in orbit around the Earth, most of them part of mega-constellations in which each satellite has a service life of only a few years.

New satellites must be quickly launched as replacements. To avoid leaving old, dead satellites in Earth’s already-crowded low orbits, most satellite operators deliberately de-orbit them into Earth’s upper atmosphere.

That approach is now being taken to a vastly larger scale and there are implications for Earth’s #climate and #atmosphere.

Rocket launches already contribute to climate change and #ozone depletion.

Scaling them up to deploy a million aircraft-sized satellites would push upper-atmosphere heating and ozone loss far beyond previous estimates, with the steady burn-up of dead satellites compounding the impacts.

This is just a fraction of what is to come if planned mega-constellations go ahead. Operators worldwide have already asked for a combined total of over one million satellites.

The very smallest particles, finer than a human hair, can stay suspended in the atmosphere for years, contributing to ozone depletion and climate change.

A million satellites could mean that a teragram of alumina accumulates in the upper atmosphere – enough, alongside launch emissions, to significantly alter atmospheric chemistry and heating in dramatic ways we do not yet understand.

There is no public mandate for a single company in one country to make changes on that scale to the planet’s atmosphere.

#space #astronomy
https://theconversation.com/a-new-space-race-could-turn-our-atmosphere-into-a-crematorium-for-satellites-276366

A new space race could turn our atmosphere into a ‘crematorium for satellites’

Planned ‘megaconstellations’ of satellites could cause unforeseen harm to the ozone layer and climate systems. Global regulation is needed before it’s too late.

The Conversation

Terry Dactil Feb 6

Outdoor Guide Feb 6

The Clever Reason To Plant Basil And Tomato Together In Your Garden
https://www.foodie.com/1865749/clever-reason-plant-basil-tomato-garden/?utm_source=flipboard&utm_medium=activitypub

Posted into Garden @garden-OutdoorGuide

The Clever Reason To Plant Basil And Tomato Together In Your Garden - Foodie

Tomato and basil certainly go together well in the kitchen, but planting these together in your garden helps ward off some pests and encourages good growth.

Foodie

Terry Dactil Feb 6