When scientists look at the rotation and orbit of planets and other bodies in our solar system, they use a tool called an ephemeris. This is a centuries-old idea: a document where each known item is listed, along with where it will be at a particular time. It’s a snapshot of the solar system, basically, which sailors used to guide ships using celestial navigation.
With a printed list in hand, they could compare what they saw in their instruments in realtime to where they believed the stars and planets should appear in the night sky at their position.
Many things are taking place:
Astronomers located center of solar system to help find black holes
Astronomers have figured out how to find the center of mass of the solar system. And that in turn will help them use überdense stars spinning faster than the blades on a kitchen blender to find gigantic black holes across the Universe that are eating each other.
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OK, first of all, you might think the location of the center of mass of the solar system is obvious: The center of the Sun. It has 99.8% of all the mass in the solar system, after all!
We won't reach other solar systems for a while — robots could visit them first
There are two answers to that question. The first involves unmanned travel, which I consider cheating. I mean, where is the fun in that? None if you ask me.
[Read: The story of Ed Dwight: the man who nearly became the first African-American to reach space ]
With such a lengthy mission, it's also likely a one-way trip. This means researchers and scientists will want to target a system capable of at least providing the materials needed to sustain an artificial habitat indefinitely once we arrive. They would want to prepare for the possibility that the new world might prove inhospitable.
Earth and Mars -- Distinct Inner Solar System Products - Astrobiology
Terrestrial planets provide Solar System insights into the evolution of accretion, core-mantle and crust-mantle differentiation, and surface processes. The Earth and Mars have equal enrichment in refractory elements (1.9 × CI), although the Earth is more volatile-depleted and less oxidized than Mars.
The volatile-depleted, reduced proto-Earth was struck by an oxidized Mars-like (i.e., composition and mass) body, resulting in a debris ring having mostly a proto-Earth's mantle composition. This event resulted in the emulsification of the impactor, including its core, followed by oxidation and re-equilibration of the post-impact silicate Earth.
In case you are keeping track:
Australian Solar Systems Interest Index – July 2020 - Solar Quotes Blog
Results from June indicate PV systems larger than 6kW are continuing to be increasingly popular among Australia’s prospective home solar buyers.
In June, nearly 83% of Australian solar shoppers using the SolarQuotes service who had a system size already in mind wanted a 6kW solar system or larger, up slightly on May. Of those, just shy of 51% wanted a 6kW system and the rest, even bigger – so it may not be long before we see 6kW+ consistently trumping 6kW in requests. As for 5kW PV systems , just 12% wanted this capacity – in June last year the proportion was 16% and in June 2018, 37%.
NASA simulator creates stunning sunsets from alien planets across the solar system | Daily Mail
The animation transports viewers to the surface of Venus, Mars, Uranus and Saturn's largest moon Titan, allowing them to witness the sun dip into the horizon.
As a planet rotates away from the sun's light, photons scattered in different directions that produce an array of colors.
The sunset on Uranus is a light shade of blue that fades into a royal blue with hints of turquoise, while Titan's starts as a vibrant yellow then shifts into a fiery red.
NASA: See 10-year time lapse of the sun - silive.com
STATEN ISLAND, N.Y. -- For more than a full decade, NASA has been watching the sun non-stop from its orbit in space around the Earth.
In fact, NASA's Solar Dynamic Observatory (SDO) has gathered 425 million high-resolution images of the sun, amassing 20 million gigabytes of data over the past 10 years. With a triad of instruments, the SDO captures an image of the sun every .75 seconds.
This information has enabled countless new discoveries about the workings of the sun and how it influences our solar system, according to NASA.
Celestial fireworks: See Jupiter and Saturn with a 'Buck Moon' lunar eclipse this Fourth of July
Nature has its own fireworks in store this Independence Day weekend with a stunning full moon ornamented by two shining planets.
This upcoming holiday weekend, eyes all over the United States will be turned to the skies for various firework shows and displays. The scene will be enhanced by a stunning full moon on Friday (July 3) and Saturday (July 4) if you're outside and looking toward the south-southeast at around 9 or 10 p.m. local time. The "Buck Moon" as July's full moon is called will star in minor penumbral lunar eclipse overnight on Saturday and Sunday, as well.
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