The 36-inch Great Refractor Telescope was built from 1880 to 1888. Located in the larger dome of the main observatory building, it is 57 feet long, 4 feet in diameter, and weighs over 25,000 lbs.

One half of the powerful new Nancy Grace Roman Space Telescope passed major milestone tests, demonstrating space readiness.

"I did everything myself—building the foundation ... he was able to cut costs significantly; a similar observatory built with a new dome by professionals could easily run between €40,000 ...

Griffith Observatory held a party on Wednesday, May 14, celebrating its 90th anniversary, and the leaders who make sure the ...

The Empire State Building observatory saw a slowdown in ticket sales during the first quarter of 2025, according to Empire State Realty Trust ’s earnings report released Wednesday, as the country ...

Formerly known as Freedom Tower, One World Trade Center is the main building of the rebuilt World Trade Center complex in lower Manhattan. This observatory sits atop the tallest building in the ...

The Empire State Building’s owner reported a 12% decline in visitors to its popular observatory last quarter, which officials attributed to poor weather and the late Easter holiday instead of Pr ...

The South Observatory closed temporarily for renovations earlier this year, but it officially reopened its doors on Wednesday April 23. In addition to providing one of the city’s best views, the South ...

We also look into the history of the observatory building, completed in 1834 with its old observation devices, climb the old observation tower and touch a real meteorite. In the planetarium, we get to ...

You know that very special rock you couldn’t resist picking up and taking home? The one with the uncanny shape, the ...

The Observatory has established partnerships with the UN Environment Programme, the World Health Organization and the Centre Scientifique de Monaco. In all of our work, we train and mentor students, ...