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Compact QKD system paves the way to cost-effective satellite-based quantum networks

Researchers report an experimental demonstration of a space-to-ground quantum key distribution (QKD) network using a compact QKD terminal aboard the Chinese Space Lab Tiangong-2 and four ground stations. The new QKD system is less than half the weight of the system the researchers developed for the Micius satellite, which was used to perform the...

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Celestial bodies

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Obscene Wealth – Ice on the Moon

I was immediately branded a Marxist when I cited the following article on a forum. I explained that if it describes the problem, to a certain extent I don’t care who wrote it....

The Magnum: NASA’s Forgotten Super Heavy-Lift Rocket Design

Source: NASA In the mid-1990s, NASA’s Marshall Space Flight Center quietly worked on a massive rocket concept known as Magnum. This super heavy-lift vehicle, although never progressing beyond the preliminary design phase, represented an ambitious...

The largest 3-D map of the universe reveals hints of dark energy’s secrets

A massive survey of the cosmos is revealing new details of one of the most mysterious facets of the universe, dark energy. Intriguingly, when combined with other observations, the data hint that dark energy,...

Galaxies

Planets

Sattelites

Satellites more at risk from fast solar wind than a major space storm

Satellites are more likely to be at risk from high-speed solar wind than a major geomagnetic storm according to a new UK-US study published this week in the Journal Space Weather. Researchers investigating the space...

From the Vatican Observatory Faith and Science pages (Younger Readers): Fossil Hunter: How Mary Anning Changed the Science of Prehistoric Life

“Fossil Hunter: How Mary Anning Changed the Science of Prehistoric Life” (CLICK HERE for it) Author Cheryl Blackford tells the story of Mary Anning, “a...

Irish Space Blog: “Welcome to Jupiter”

Following a 2.8 billion kilometer inter-planetary journey lasting almost five years, NASA's Juno spacecraft has successfully entered orbit around Jupiter on a bold mission...

Decoding the Red Planet’s Structure: Insights From Martian Meteorites

Scientists at the Scripps Institution of Oceanography have analyzed Martian meteorites, providing insights into Mars’ mantle and crust structure. These meteorites, originating from volcanic...

cosmicfunnies: Starry Greetings! Here is a comic…

Starry Greetings!Here is a comic about a very difficult topic: Dark Energy.(Seriously this was many hours of mental head banging but i finally did...

A Stellar Odyssey through Cygnus

Pelican Nebula (IC 5070 and IC 5067) taken from Leeds UK by amateur astro-photographer urmymuse. License: CC BY-SA 4.0.Nestled in the vastness of the...

New Gaia data paint the most detailed picture yet of the Milky Way

1.6 billion stars. 11.4 million galaxies. 158,000 asteroids. One spacecraft. The European Space Agency’s Gaia space observatory, which launched in 2013, has long surpassed its goal...

Metasurfaces make a single-shot polarization imaging system – Physics World

Metasurfaces make a single-shot polarization imaging system – Physics World ...

The history and motivations behind India’s…

Gurbir Singh: India went to Mars in 2013 because there was a Chinese spacecraft on board the Fobos-Grunt spacecraft launched by Russia in 2011....

A perigee-raising manoeuvre by the North Korean satellite Malligyong-1

Kim Jong Un inspecting a Malligyong satellite under construction in 2023. image: KCNAOn 21 November 2023 (see this earlier blogpost), after two failed earlier...

Cosmology