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Sep 21, 2020 5 tweets 2 min read Read on X
To understand what the compact object in the centre of the nebula is, we have to go back in time. The story began with this young graduate student at Cambridge, Jocelyn Bell
In 1967, she noticed a strange “bit of scruff” in the data from the radio telescope she had built for her project, designed by her thesis supervisor Anthony Hewish, to study quasars
The signal, extremely periodic in nature, wasn't from a quasar, and after a careful investigation she could rule out manmade sources.
It was even speculated whether they detected a signal from an extraterrestrial civilization "little green men" 😮👽
Soon they discovered more such radio pulses. It was later understood that the source was a beam of radiation, sweeping the Earth like a lighthouse, from a rotating compact star, a #pulsar

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More from @People_Of_Space

Jan 30, 2022
PEOPLE OF SPACE! I’m super excited to be hosting this week! We’ll be covering a bunch of topics that are near and dear to me including #space (obviously), astronomy, supernovae, radio astronomy, science communication, and MORE
🧵
#science #scicomm #spacetwitter #intro #Thread
But who is this random dude yelling at us about space?
Well the short version is that I’m a physicist who finished high school with every intention of becoming a lawyer - pictured is 19yo me not caring about science
#accidentalscientist #accidentalphysicist #throwback #SPACE 10 years ago before I had considered a career in science - I
For a slightly longer version you can check out this #thread I did on my @funfactscience account recently to reintroduce myself to #spacefam and any newcomers to my page
#introductions #spacetwitter #space
Read 7 tweets
Jul 26, 2021
The mission patch was based on a design from well known Italian fashion designer, Emilio Pucci. The design has three stylized birds flying over the Hadley-Appenine landing site with the crew names on the lower part of the outer border.
In an early version of an Easter egg, the crew snuck a Roman numeral XV into the crater shadows. According to a story I heard from one of Al Worden's @ExploreSpaceKSC presentations, NASA discouraged Roman numerals on the Apollo patches, thus the hidden nature.
Before his passing last year, @WordenAlfred was a regular astronaut host at @ExploreSpaceKSC giving presentations guiding tours and being an affable ambassador of the Apollo program to a new audience.
Read 4 tweets
Jul 26, 2021
On board were (left to right) Lunar Module Pilot Jim Irwin, Commander Dave Scott, and Command Module Pilot Al Worden
The landing site was Hadley-Appenine, on the edge of Mare Imbrium. It was bordered by Hadley Rille, a valley-like geological structure and the Montes Apenninus, or Appenine Mountains. The Palus Putredinus was a lava field that filled the area.
Read 7 tweets
Jul 16, 2021
Today I’ll be working on some research for the big Mars exhibition! As I said yesterday, I’m working on researching how people have been imaging the Red Planet throughout history.
Today we have orbiters circling Mars and rovers that take pictures of the surface. But the history of imaging Mars stretches back centuries, from depicting Mars in art to the canals people thought they saw on the planet.
What are some of your favourite images of Mars and why?
Read 9 tweets
Jul 15, 2021
Going to talk about designing a temporary display today!
In Science Museum lingo, there are 2 kinds of displays:
🚀Exhibitions (temporary displays) - these can last up to a year
🚀Galleries (permanent displays)
Even a temporary display might take several years to prepare for, with overviews and detailed proposals.
Read 5 tweets
May 15, 2021
🧬 Life as we don't know it 🧫

Exotic solvents & life's building blocks are among the more speculative
#astrobiology topics, but still important to study scientifically! Our own system contains places potentially able to host life unlike on Earth. Not just Titan!

#AstroThread
All Earth life is carbon-based and needs water to survive. 💦

'Mildly' exotic life might share these traits, but use e.g. other information molecule (or differently coded DNA, even with different/more 'letters') or opposite chirality (left/right-handedness) of some compounds. ImageImage
There are countless possibilities of different information molecules and their coding. Is Earth DNA and RNA a ', frozen accident', or does it have a phys/chem reason? And is all life chiral? In the same way, or is that another frozen accident? What about the amino acids we use? Image
Read 82 tweets

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