u/maurobarbieriscience

This is a frame from a visualization of real stellar motions over the last 10 million years, calculated from ESA/Gaia data. This particular frame shows the night sky roughly 70,000 years ago, around the time some of the earliest known symbolic artifacts appear in the archaeological record.

The star positions are astrometrically accurate for that period, based on real orbital calculations, not artistic reconstruction. It's one way to see, at least approximately, what the sky looked like for the people associated with the earliest evidence of symbolic thought.

Full video (covering 10 million years to today, 4K available): https://youtu.be/i-e8N_huznE

I calculated the real galactic orbits of about 11,000 stars (all stars that were naked-eye visible at some point in the last 10 million years) and animated them from the Sun's own point of view, following its path through the galaxy.

Full video (available in 4K): https://youtu.be/i-e8N_huznE

Data source: Gaia DR3, complemented with Hipparcos for the brightest stars.

A few things that stood out while making this:

• Star clusters like the Hyades visibly move together as a group between 1.5 and 0.5 Myr ago
• Alpha Centauri (closest star system to us) only becomes visible in the last 500,000 years
• Sirius drifts out of Ursa Major and heads toward Orion over time

Caveats: star brightness assumes constant absolute magnitude over time (not accurate for young hot stars), and interstellar dust extinction isn't modeled since no 3D dust map exists for the past.

I calculated the real galactic orbits of about 11000 stars (all stars that were naked-eye visible at some point in the last 10 million years) and animated them from the Sun's own point of view, following its path through the galaxy.

Full video (available in 4K): https://youtu.be/i-e8N_huznE

Data source: Gaia DR3, complemented with Hipparcos for the brightest stars.

A few things that stood out while making this:

• Star clusters like the Hyades visibly move together as a group between 1.5 and 0.5 Myr ago
• Alpha Centauri (closest star system to us) only becomes visible in the last 500000 years
• Sirius drifts out of Ursa Major and heads toward Orion over time

Caveats: star brightness assumes constant absolute magnitude over time (not accurate for young hot stars), and interstellar dust extinction isn't modeled since no 3D dust map exists for the past.

This is the improved follow-up to a lower-res version I posted few days ago.

Full video here: https://youtu.be/9TpaoCQaVEY

I've created this visualization showing how the sky around us changes over 20 million years as the Sun travels through the galaxy.

Each star moves with its own velocity relative to the Sun, this creates fascinating perspective effects: clusters like the Hyades drifting close and then away again (between -1.5 and -0.5 Myr, low left of the video), periods where the sky is filled with bright stars in patterns we'd never recognize today, and stars that sit near the celestial poles for tens of thousands of years.

**Details:**

- Time span: ±10 million years

- 1 frame every 10,000 years

- Real data from Gaia DR3 + Hipparcos (ESA)

- Linear extrapolation of measured positions and velocities (accurate on this timescale)

This is the first in a series of astronomical visualizations focused on the Local Stellar Neighborhood and the Sun's journey. Feedback is very welcome!