Published in


In 2022 SpaceX will provide 4 missile tracking satellites.

space tracking radar
Photo by Donald Giannatti on Unsplash

The contracts for the 8 wide-field-of-view missile-tracking satellites were awarded to SpaceX and L3Harris for $149 million and $193 million respectively.




We curate and disseminate outstanding articles from diverse domains and disciplines to create fusion and synergy.

What does one billionaire say to another?

keyboard with a rainbow paper below it

They are Big, they are Small, but all Spheres

Robotic Space Probes — Penny Wise, Pound Foolish

Sharing on Mars keeps us all alive.

space camp suit with full helmet

A Response to “Mars Barges”

Saeko Hayashi: a Japanese astronomer in Hawaii

What is Fermi’s paradox?

A cataclysmic explosion of a massive star.

star exploding in dark space

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Tree Langdon

Tree Langdon

Want to learn to write? Join me here to get started. Use this link:, then email me at

More from Medium

Our Amazing Planet And Some Of Its Secrets.

Elon Musk’s Idea of Immortality

Afro-Turkish Soldier of Ottoman Intelligence Service “Teşkilat-ı Mahsusa”

The Harder Problem of Free Energy: an Episodic Saga