logo
Previous Thread
Next Thread
Print Thread
Page 41 of 56 1 2 39 40 41 42 43 55 56
Joined: May 2010
Posts: 11,046
Likes: 28
BellaOnline Editor
Renaissance Human
OP Online Content
BellaOnline Editor
Renaissance Human
Joined: May 2010
Posts: 11,046
Likes: 28

On this day in 1634 - September 25th - Danish astronomer Ole Christensen Rømer was born.

He is best known for making the first quantitative measurements of the speed of light by precisely measuring the length of time between eclipses of Jupiter by one of its moons.


Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!

http://www.bellaonline.com/newsletter/astronomy
Sponsored Post Advertisement
Joined: May 2010
Posts: 11,046
Likes: 28
BellaOnline Editor
Renaissance Human
OP Online Content
BellaOnline Editor
Renaissance Human
Joined: May 2010
Posts: 11,046
Likes: 28

On this day in 1814 - September 27th - American astronomer Daniel Kirkwood was born.

Kirkwood is best known for his study of asteroid orbits. When arranging the then-growing number of discovered asteroids by their distance from the Sun, he noted several gaps, now named Kirkwood gaps. He associated these gaps with orbital resonances with the orbit of Jupiter.


Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!

http://www.bellaonline.com/newsletter/astronomy
Joined: May 2010
Posts: 11,046
Likes: 28
BellaOnline Editor
Renaissance Human
OP Online Content
BellaOnline Editor
Renaissance Human
Joined: May 2010
Posts: 11,046
Likes: 28

On this day in 2007 - September 27th - NASA's Dawn spacecraft was launched.

Dawn orbited and studied the asteroid Vesta, and then went on tosatudy dwarf planet Ceres. The mission is finished, but it's still in orbit around Ceres.



Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!

http://www.bellaonline.com/newsletter/astronomy
Joined: May 2010
Posts: 11,046
Likes: 28
BellaOnline Editor
Renaissance Human
OP Online Content
BellaOnline Editor
Renaissance Human
Joined: May 2010
Posts: 11,046
Likes: 28

On this day in 1605 - September 28th - French astronomer and mathematician Ismaël Bullialdus was born.

Often regarded as ‘the most noted astronomer of his generation’ he wrote several books, the most famous being Astronomia Philolaica, in which he supported Johannes Kepler’s elliptical planetary orbits. Bullialdus was also a defender of the views and ideas of Copernicus and Galileo.


Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!

http://www.bellaonline.com/newsletter/astronomy
Joined: May 2010
Posts: 11,046
Likes: 28
BellaOnline Editor
Renaissance Human
OP Online Content
BellaOnline Editor
Renaissance Human
Joined: May 2010
Posts: 11,046
Likes: 28

On this day in 1765 - September 29th - German astronomer Karl Ludwig Harding was born.

He is best remembered for the discovery of the third asteroid - Juno - made on 1 Sep 1804 while working at the private observatory of his countryman and fellow astronomer Johann Hieronymus Schröter.


Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!

http://www.bellaonline.com/newsletter/astronomy
Joined: May 2010
Posts: 11,046
Likes: 28
BellaOnline Editor
Renaissance Human
OP Online Content
BellaOnline Editor
Renaissance Human
Joined: May 2010
Posts: 11,046
Likes: 28

On this day in 1880 - September 30th - Henry Draper took the first photograph of a nebula, the Orion Nebula.

Draper was an American physician, professor of medicine, keen astronomer and pioneer of astrophotography. Stars with HD numbers are listed in the Henry Draper Catalog compiled by Harvard College Observatory and funded by Draper's widow, Anna Draper.


Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!

http://www.bellaonline.com/newsletter/astronomy
Joined: May 2010
Posts: 11,046
Likes: 28
BellaOnline Editor
Renaissance Human
OP Online Content
BellaOnline Editor
Renaissance Human
Joined: May 2010
Posts: 11,046
Likes: 28

On this day in 2016 - September 30th - ESA's Rosetta mission ended with a controlled descent to the surface of Comet Churyumov-Gerasimenko.


Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!

http://www.bellaonline.com/newsletter/astronomy
Joined: May 2010
Posts: 11,046
Likes: 28
BellaOnline Editor
Renaissance Human
OP Online Content
BellaOnline Editor
Renaissance Human
Joined: May 2010
Posts: 11,046
Likes: 28

On this day in 1897 - October 1st - the 40-inch refracting telescope was dedicated at Yerkes Observatory in Williams Bay, Wisconsin.

From 1897-1909 it was the world's largest telescope. It's still the world's largest refractor.


Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!

http://www.bellaonline.com/newsletter/astronomy
Joined: May 2010
Posts: 11,046
Likes: 28
BellaOnline Editor
Renaissance Human
OP Online Content
BellaOnline Editor
Renaissance Human
Joined: May 2010
Posts: 11,046
Likes: 28

On this day in 1958 - October 1st - NASA was founded.




Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!

http://www.bellaonline.com/newsletter/astronomy
Joined: May 2010
Posts: 11,046
Likes: 28
BellaOnline Editor
Renaissance Human
OP Online Content
BellaOnline Editor
Renaissance Human
Joined: May 2010
Posts: 11,046
Likes: 28

On this day in 1920 - October 2nd - Italian mathematician and engineer Giuseppe 'Bepi' Colombo was born.

Colombo, known as "Grandfather of the fly-by", suggested to NASA in 1970 that its Mariner 10 mission could achieve a second fly-by of Mercury by making use of the planet's gravity. A careful analysis showed this could indeed be done and was incorporated into the mission. ESA (European Space Agency) has commemorated him by naming its Mercury mission BepiColombo.


Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!

http://www.bellaonline.com/newsletter/astronomy
Page 41 of 56 1 2 39 40 41 42 43 55 56

Moderated by  Mona - Astronomy 

Link Copied to Clipboard
Brand New Posts
Groundhog Day
by Mona - Astronomy - 02/01/23 04:26 PM
Finish Fraying Fabric Edges
by Cheryl - Sewing Editor - 02/01/23 04:22 PM
Simple Sewing Ideas for Tidying-Up
by Cheryl - Sewing Editor - 02/01/23 04:21 PM
Astro Women - Birthdays
by Mona - Astronomy - 02/01/23 09:17 AM
Astronauts - in Memoriam
by Mona - Astronomy - 02/01/23 09:06 AM
2023 - on this day in the past . . .
by Mona - Astronomy - 02/01/23 08:36 AM
Psalm for the day
by Angie - 01/31/23 08:37 AM
Inspiration Quote
by Angie - 01/29/23 05:42 PM
Astro Advent 2022 - *new articles*
by Mona - Astronomy - 01/29/23 08:53 AM
Review Illustrator Basics The Shape Builder Tool
by Digital Art and Animation - 01/26/23 04:07 PM
Sponsor
Safety
We take forum safety very seriously here at BellaOnline. Please be sure to read through our Forum Guidelines. Let us know if you have any questions or comments!
Privacy
This forum uses cookies to ensure smooth navigation from page to page of a thread. If you choose to register and provide your email, that email is solely used to get your password to you and updates on any topics you choose to watch. Nothing else. Ask with any questions!


| About BellaOnline | Privacy Policy | Advertising | Become an Editor |
Website copyright © 2022 Minerva WebWorks LLC. All rights reserved.


Powered by UBB.threads™ PHP Forum Software 7.7.5