@MillsObs

Britain’s first purpose-built public observatory, located on the summit of Balgay Hill. Featuring a planetarium, amazing telescopes and a shop.

 Dundee, Scotland
leisureandculturedundee.com/mills
Joined June 2013
  • Tweets1.3K
  • Following618
  • Followers1.2K
145Media
Interesting capture and highlighting.
Black Hole
@konstructivizmOct 20
🪐 Jupiter’s moon Io, as captured by the Juno spacecraft in the near-infrared range. Bright spots correspond to active volcanoes. 🌋
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Our next planetarium shows are scheduled for Friday 6th November. They start at 7, 8 and 9pm. Adults cost £3 and children £1.50. Please call us on 01382 435967 if you would like to book.
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We reopened on 1st Oct and despite tonight being rubbish for viewing we have had some decent weather so far this autumn. Long may it continue! Clear skies!
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Comportamiento del agua y el aceite en gravedad 0.
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Vincent Ledvina
@Vincent_LedvinaOct 19
Incredible dancing "corona" aurora filmed in real-time during an intense geomagnetic storm. Location: Fairbanks, Alaska
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Massimo
@Rainmaker1973Mar 31
Look how big Jupiter's magnetosphere would be if we were be able to see it
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All day Astronomy
@forallcuriousMar 31
This time-lapse technique that makes you truly feel that it's not the sky that's spinning, but the Earth rotating—it's amazing.
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The Scientific Lens
@LensScientificMar 30
In the rare case you haven’t seen it yet: Here is the 10-day trajectory of Artemis II around the Moon and back. It follows a figure-eight loop around the Moon, reaching over 230,000 miles away from Earth.
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Tonight is our last open night of the 2025/2026 winter season. It's been a really wet and windy 6 months with scarce viewing opportunities. Here's hoping for clearer skies for 2026/2027. We will reopen full-time on the 1st October. Thanks to all our visitors and supporters.
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What a brilliant little graphic.
Philosophy Of Physics
@PhilosophyOfPhyMar 17
The Pythagorean Theorem is more than an algebraic formula, it is a fundamental property of space that can be demonstrated through the physical rearrangement of areas.
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Curiosity
@MAstronomersMar 16
Depiction of the Milky Way in the Tomb of Ramesses VI.
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Halley's Comet, as depicted in the Bayeux Tapestry. The comet was seen over the skies of England in April of 1066
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A great little graphic demonstrating the length of days on different planets.
Curiosity
@MAstronomersMar 15
How long is a day on Each Planet?

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Mills Observatory retweeted
Curiosity
@MAstronomersMar 11
More than 400 years ago, Galileo Galilei proposed that mass does not affect the speed with which an object falls. Now, using the world's largest vacuum chamber at NASA, we can confirm this fundamental principle of physics. xitter.cf/i/status/2031710479748…
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We are delighted to be hosting the UoD's 8th Physics Science Fair @MillsObs on Saturday 21st March from 2:30pm onwards. Amongst the exhibits we'll have "banana keyboard", "magnetic loops" and "fun with fusion". No admission fee, no booking required - just turn up - all welcome.
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Mills Observatory retweeted
Amazing Physics
@amazing_physicsMar 10
⚡️This is the clearest image ever taken of Saturn’s North Pole. A perfect hexagonal storm is raging for decades now and it is over 30,000km across. First spotted by Voyager 1 back in 1980s. 📷 NASA
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Pluto. Is it a planet or not?
Curiosity
@MAstronomersMar 10
After traveling 9 years and covering 3 billion miles, NASA's New Horizons spacecraft got this shot. Behold! The icy mountains of Pluto.

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Readers added context they thought people might want to know
The attached video is a 2017 NASA CGI rendering created from New Horizons' 2015 data, with exaggerated topography and enhanced colors. It is not actual footage or the spacecraft's real trajectory during its flyby at ~7,800 miles. The mission details are accurate. nasa.gov/missions/nasa-… science.nasa.gov/mission/new-ho…
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The mathematics present through our universe never cease to amaze.
Black Hole
@konstructivizmMar 3
Saturn's north pole is a perfect hexagonal storm! Earth is about 12,700 km wide. This hexagon is nearly 30,000 km across. You could drop two whole Earths inside this storm and they still wouldn't touch the sides. A geometric masterpiece raging at the top of the world. NASA
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Mills Observatory retweeted
Curiosity
@MAstronomersMar 3
Eruption on Io (Jupiter's Moon). This image was taken from 2.8 million miles away from Io.
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Black Hole
@konstructivizmFeb 25
Just awesome. Nature’s precision at the edge of the world. Photo: Aman Chokshi Amundsen–Scott South Pole Station, Antarctica
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