- Interactive Sky Chart | Map Your Night Sky
Chart the stars and planets visible to the unaided eye from any location, at any time of day or night, on any date between the years 1600 to 2400 by entering your location, either via zip code, city, or latitude longitude Change the horizon view by dragging the green square on the full-sky chart
- Table of Sunrise Sunset, Moonrise Moonset, or Twilight Times for an . . .
Use the following steps to obtain a table of desired phenomena for any location worldwide: Enter the year for which the table is desired Select the table type (sunrise sunset, moonrise moonset,
- What is the age of stars we see in the night sky? - BBC Sky at Night . . .
Most stars spend the vast majority of their lives in what’s known as the main sequence phase Main sequence stars have reached maturity and are steadily burning through the hydrogen within their cores This era can last for billions of years, during which time they show little outward change
- Create Your Personalized Star Map | TheSkyLive
Generate a beautiful map of the stars planets as they appeared on your birthday or any special date! Customize styles, download a high-res image, and share your unique celestial snapshot
- Star Chart Calculator - Sage Calculator
Explore our interactive Star Chart Calculator to find visible constellations, best planets to observe, and local sidereal time by date and location
- Seeing in the Dark . Explore the Sky . Your Sky Tonight | PBS
Our star chart is designed to get you out learning the night sky within a matter of moments Just set it for your time and location, make a few tweaks if you like for personal taste, and print it
- Stellar age estimation - Wikipedia
In addition, knowing the age of one member of a star system can help determine the age of that system In a star system, stars almost always form at the same time as each other, and given the age of one star, the age of all of the others can be known
- Stellar Catalog | Discover the nearby universe
The Sun is about 4 6 billion years old, and it’s roughly halfway through its life Young stars may be just a few million years old and are often found in star-forming regions Old stars, like many found in the galactic halo or globular clusters, can be over 10 billion years old
|