Space Telescopes
Telescopes on Earth do not take the best pictures of planets, stars or galaxies. Light from these objects is scattered by the atmosphere or obscured by light from cities. Even the best Earth based telescopes, situated high on mountaintops far away from...
https://astarmathsandphysics.com/igcse-physics-notes/420-space-telescopes.htmlA Telescoping Logarithmic Series
What is the value of \[log_23 \times log_3 4 \times log_4 5 \times...log_{30}31 \times log_{31}32\] ? Working from the right hand side, we can write \[log_{30}31 \times log_{31}32= log_{30}31^{log_{31}32}=log_{30}32\] \[log_{29}30 \times log_{30}31...
https://astarmathsandphysics.com/ib-maths-notes/logarithms/5435-a-telescoping-logarithmic-series.htmlThe Astronomical Telescope
An astronomical telescope consists of two lenses. The first lens, the objective lens, focuses parallel rays from a distant object to the focal point of the first lens. The focal points of the objective and eyepiece lenses coincide – this is called...
https://astarmathsandphysics.com/ib-physics-notes/optics-and-light/1409-the-astronomical-telescope.htmlA Level Maths Notes - S1
https://astarmathsandphysics.com/a-level-maths-notes/s1.htmlMy Favourite Educational Links
https://freeexampapers.com Past papers, all subjects, all levels. Student Forum Popular student forum. http://library.cern.ch/derobbio/mathres/mathres1.html#e-jouh Undergraduate and Postgraduate Reference Library with lots of e-books and e-journals....
https://astarmathsandphysics.com/my-favourite-educational-links.htmlThe Curtis - Shapley Debate
In the early part of the twentieth century there was much disagreement between astronomers about the structure and size of the Universe. This came to a head in a debate between the astronomers Heber Curtis and Harlow Shapley organised by the National...
https://astarmathsandphysics.com/gcse-physics-notes/836-the-curtis-shapley-debate.htmlNeptunes Great Dark Spot
Neptune's Great Dark Spot is an collection of atmospheric phenomena on Neptune similar to Jupiter's Great Red Spot thought to represent a hole in the layers of methane in Neptune's atmosphere. The first one was observed in 1989 by NASA's Voyager probe....
https://astarmathsandphysics.com/university-physics-notes/planetary-science/1508-neptunes-great-dark-spot.htmlLife Will Find a Way
There are billions of galaxies, each with billions of stars, around each stars there may be planets which may have existed for billions of years. It seems that chance may have jumped through billions of hoops to leave us alone in the Universe. To find...
https://astarmathsandphysics.com/a-level-physics-notes/principles-dimensions-units-and-error-analysis/2981-life-will-find-a-way.htmlThe Age of the Universe
Until the twentieth century, most people – because this was taught by many religions - thought the Universe was unchanging and eternal. When the fist big telescope were built, ideas soon changed. Astronomers observed all galaxies and clusters of...
https://astarmathsandphysics.com/igcse-physics-notes/426-the-age-of-the-universe.htmlBinary Stars
Our Sun is a single star, but many stars exist in binary systems consisting of two or more stars in orbit around each other (or more accurately, around their common centre of mass). There are different types of binary star – visual, spectroscopic and...
https://astarmathsandphysics.com/ib-physics-notes/astrophysics/1186-binary-stars.htmlGalileo's Observations of the Solar System
Galileo came after Copernicus and added to the evidence in favour of the Copernican model of the solar system. He was the first astronomer to make and use a telescope, He observed There were mountains and craters on the moon, The planet Venus had...
https://astarmathsandphysics.com/ib-physics-notes/the-history-and-development-of-physics/1308-galileo-s-observations-of-the-solar-system.html