🎂 Astronomer Vera Rubin is born (1928)
Where: Philadelphia, USA
📅 On This Day: July 23
July 23, 1928: Astronomer Vera Rubin is born. On 23 July 1928, astronomer Vera Rubin was born in Philadelphia, USA. She found that stars at the edges of galaxies spin as fast as those near the centre, strong evidence for invisible 'dark matter'. A big telescope observatory on a mountain in Chile is named after her.
✨ More events on this day
- 1980 🚀 Phạm Tuân became the first Vietnamese person and the first Asian in space in 1980, flying on the Soviet mission Soyuz 37.
- 1995 🚀 Comet Hale–Bopp was discovered in 1995, and about a year later it was bright enough to see without a telescope.
- 1999 🚀 Eileen Collins became the first woman to command a Space Shuttle in 1999, flying Columbia to launch the Chandra X-ray telescope.
🧠 Question of the day
Rubin's discovery was evidence for what?
- A new moon
- Aliens
- Dark matter
Show the answer
Answer: Dark matter
🎂 Landmarks that opened on July 23
Questions
What happened on July 23?
July 23, 1928: Astronomer Vera Rubin is born. It happened in Philadelphia, USA.
Which landmarks opened on July 23?
Stari Most, Mostar (reopened 2004).
In the game, the "Today on Earth" panel shows this story on its day, with a question to answer and a place to fly to.
More days in July
Source: en.wikipedia.org/wiki/Vera_Rubin