Ever wonder what it would be like to travel to a star and see it up close? Since the time I was little I have looked up to the stars almost nightly, weather permitting. I became "friends" with them, in the sense of having a connected feeling, and eventually a certain warmth gained from familiarity and fostered by the constancy of the starry sphere. I was fascinated by the daily and annual cycle of the sight.
Even the most cursory glance shows that stars have various colors.
And certainly, having noticed that some are brighter than others, one has wondered whether that was because they are nearer, or are intrinsically brighter. In other words they each have an individuality.
Here is a meditation I try on myself from time to time. Get up at dawn and find a comfortable place to stay lying on your back for a couple of hours. Face easterly. As the glow of dawn increases try to imagine that the planet under you is turning toward the sight of the Sun instead of our commonplace perception that the Sun is rising.
When the Sun becomes visible at the horizon say to yourself "Wow, I finally get to travel to a star! What an amazing thing: so warm and bright!"
As more discoveries are made of "exoplanets" around other stars, one begins to get an idea of whether the setup in our solar system is "normal" or not. In general the ones discovered are much bigger than the Earth (partly an artifact of their greater ease of discovery) and closer to their star. Some apparently whiz around in their orbits in a matter of weeks or days (as reckoned by Earth time, of course). Now that's puzzling to me... Even our closest, Mercury, takes 88 days. Are we the oddballs in the Universe?
The standard definition of any planet's "year" is the period of one complete orbit. With such short years I'd hate to live on one of those speedy exoplanets and have to pay my annual income tax , say every ten days or so!
. I've always envisioned the Earth as far from the Sun. A chance reading of this phrase in a travel account having nothing to do with astronomy got me thinking: "Earth, a planet barely more than a hundred Sun diameters from its star..." I knew the
Sun is approximately 860,000 miles in diameter and that the Earth is 93 million miles from it, but the approximate hundred to one ratio had never jumped out at me. Now that I am aware of it it seems so close! But I'm glad. It's nice and cozy right here. Just right. Drawing a parallel with the Three Bears story, astronomers call this the "
Goldilocks Zone". Just right!

In my sketch above the Sun is represented on the left by a yellow circle. The dotted line represents the distance of the Earth from the Sun, and is scaled exactly with the Sun's diameter. At this scale the Earth is too small to see, but can be imagined as the farthest right dot on the line.