SPACE FACTS: DAY 145/365π§ͺππ°οΈ
Type Ia supernovae are basically always the same because of the Chandrasekhar limit. This means that, with a bit of standardization, scientists know how bright a Type Ia supernova is, making them a powerful tool for measuring cosmic distances!
Type Ia supernovae are basically always the same because of the Chandrasekhar limit. This means that, with a bit of standardization, scientists know how bright a Type Ia supernova is, making them a powerful tool for measuring cosmic distances!
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The Local Group is one (relatively small) of over 100 clusters of galaxies that make up the Virgo Supercluster. The Virgo Supercluster spans over 100 million light-years across, a volume some thousands of times that of our little Local Group.
Image: Andrew Z. Colvin
Sometimes, small bodies can get trapped into orbits near the Lagrange points of a larger body. Most notably, Jupiter has almost 10,000 known asteroids sharing its orbit in this configuration, which are called the Trojan asteroids.
Image: NASA/ESA/J. Olmsted/STScI
Nearby a Lagrange point tends to have very little gravity, too, though, so objects may not necessarily disperse quickly from around them.
The solar wind meets the interstellar medium at a boundary called the heliopause. The heliopause is asymmetrical with a long tail (heliotail). The exact distance to the heliopause varies over time, but in general its closest point in front of the Sun is about 120 AU.
While Saturn's rings are the most stunning and notable example, it is not the only planet with rings! All of the giant planets have them. Uranus has 13 rings, Neptune has 5, and Jupiter has 4.
https://unclefishbits.com/newsletter-0058-the-opposite-of-love-isnt-hate-its-indifference/
or
https://unclefishbits.com/newsletter-0057-everyone-you-will-ever-meet-knows-something-you-dont/
Cheers to you being a curious, interesting human that wants to spread it! =)
(Quoted from
https://esawebb.org/images/weic2214d/ )
The Large and Small Magellanic Clouds are two small nearby galaxies visible by eye from the southern hemisphere. Until about 30 years ago, we thought these were our closest neighbors! (Now we know of some closer irregular dwarf galaxies.)
Image: Ed Dunens, Wikimedia
Polaris is the "pole star", conveniently above the Earth's north pole. But that isn't a permanent state! The Earth precessesβthe direction of the Earth's axis changes over time. Polaris will only be the pole star for a few more centuries.
Image: TauΚ»olunga, Wikimedia