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Astronomy Fan
@astronomyfan
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2024-07-22 03:04
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astronomyfan
GEMS
2025-07-09 02:58
July 8, 2025. Astronomy Concepts 4. Right Ascension and Declination
Right ascension (RA) and declination (Dec) are the celestial equivalents of longitude and latitude on Earth, used by astronomers to pinpoint objects in the night sky on the imaginary celestial sphere.
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astronomyfan
GEMS
2025-07-07 04:34
July 5, 2025. Astronomy Concepts 3. Angular Distance
Angular distance, measures the apparent distance between two objects in the sky as seen from an observer's perspective. Instead of a linear measurement like miles or kilometers, it quantifies the angle
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astronomyfan
GEMS
2024-11-16 04:45
November 15, 2024. Tracking Apophis 1. Introduction
Apophis (99942 Apophis)is a near-Earth asteroid, discovered in 2004 measuring 450 meters by 170 meters which caused alarm because of the possibility of colliding with Earth. When discovered, the first
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astronomyfan
GEMS
2024-09-12 03:16
September 11, 2024. Astronomy Concepts 2. Altitude and Azimuth
Altitude and Azimuth are coordinates used to describe the position of a celestial object in the sky at a specific time. This is called the Horizontal Coordinate System. Altitude refers to the vertical
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astronomyfan
GEMS
2024-09-03 03:12
September 2, 2024. Stargazing 2. The Big Dipper and Ursa Major
In this post I will show the Big Dipper and Ursa Major. The Big Dipper is not a constellation, it is called an asterism, which is only a pattern of stars within a constellation. In this case, the Big Dipper
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astronomyfan
GEMS
2024-08-20 11:55
August 20, 2024. Facts of the Solar System Planets. Earth 1
Today I continue the section on Facts about the Solar System planets with the planet Earth. Earth is the third planet in distance from the Sun. It has a sidereal year of 365.256 Earth days and sidereal
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astronomyfan
GEMS
2024-08-14 05:18
August 14, 2024. Astronomy Concepts 1. The Celestial Sphere
The Celestial Sphere is an imaginary sphere that contains a smaller sphere called Earth. When we look from Earth towards the Celestial Sphere we see all the stars, planets and different space objects projected
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astronomyfan
GEMS
2024-08-05 02:25
August 4, 2024. Stargazing 1. Polaris
Today I am starting the section called Stargazing. Polaris is a very easy to find star in the northern hemisphere. It is also called the North Star because in this present epoch it is always due North.
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astronomyfan
GEMS
2024-08-01 05:02
August 1, 2024. Facts of the Solar System Planets. Venus 1
Today I continue the section on Facts about the Solar System planets with the planet Venus. Venus is the second planet in distance from the Sun. It has a sidereal year of 224.7 Earth days and sidereal
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astronomyfan
GEMS
2024-07-24 02:42
July 23, 2024. Facts of the Solar System Planets. Mercury 1
Today I will start the section on Facts about the Solar System planets with the planet Mercury. Mercury is a rocky planet, the closest to the Sun. It has a sidereal year of 88.0 Earth days and sidereal
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astronomyfan
GEMS
2024-07-22 03:35
Introduction of Astronomy Fan
Hello. I am introducing myself to the HIVE community. I have decided to create a blog exclusively for the topic of astronomy. This blog will go through concepts that are related to space, its observation,
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