Fall Equinox Show Today: How to Watch Online


This weekend marks the transition from summer to fall in the Northern Hemisphere, and viewers around the world can watch a special webcast Sept. 21 to celebrate the event.

The online Slooh Space Camera, which broadcasts live views from telescopes around the world, will stream shots of the sun Friday beginning at 4 p.m. EDT. The free show is in honor of the September equinox, which on Saturday rings in the Northern autumn and the Southern spring.

Slooh will also air telescope views of the moon during the webcast to mark International Observe the Moon night, which falls on Saturday this year as well. The sun and moon shots will come from observatories in Prescott, Ariz., and the Canary Islands off the west coast of Africa, Slooh officials said.

The webcast can be accessed at the Slooh Space Camera’s website. A panel of experts will be on hand to discuss the equinox, International Observe the Moon night and the views seen by the telescopes.

The word “equinox” comes from the Latin for “equal night,” referring to the fact that day and night are of roughly equal length worldwide on that date.

But the equinox isn’t actually a day; strictly speaking, it’s a moment in time, defined as the instant the sun crosses the celestial equator (which is Earth’s equator projected onto the sky). The sun is above the celestial equator for half the year (spring and summer) and below it for the other half (fall and winter).

International Observe the Moon Night is put on by a coalition of scientists, educators and moon enthusiasts around the world, in an attempt to instill a sense of wonder and curiosity about Earth’s nearest neighbor.


Moon-viewing parties will be held at multiple sites around the world on Saturday. To find one near you, visit International Observe the Moon Night.

While Slooh’s webcasts offer amateur stargazers access to world-class observatories, the organization is working to make the experience more interactive. It’s currently developing an app called MySky, which will allow users to command Slooh robotic telescopes via their own tablet computers or cellphones. The first version should be available in the next few months.

This article originally published at Space.com

Read more: http://mashable.com/2012/09/21/fall-equinox-watch-online/

Holding Pieces of the Moon and Mars on Earth

Photograph by Sarah Hörst

Sarah Hörst, an Assistant Prof of Planetary Science at Johns Hopkins University, recently got to hold a piece of the moon and mars in her hand and shared her excitement on Twitter:

For those curious, Sarah also took time to answer some of the most common questions:

– The black one is the Martian one, the gray one is the moon
– The martian one landed on Earth after something smacked into Mars and sent rocks flying through space and all the way to Earth!
– They were able to tell it was from Mars by the rock’s chemical composition and isotopes
– You can read more about the Martian meteorite here
– The two rocks now have their own Twitter account

Photograph by Sarah Hörst

Photograph by Sarah Hörst

Read more: http://twistedsifter.com/2018/04/holding-pieces-of-the-moon-and-mars-on-earth/

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