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When you enter into any new area of science, you almost always find
yourself with a baffling new language of technical terms to learn before you can converse with the experts. This is certainly true in astronomy both in terms of terms that refer to the cosmos and terms that describe the tools of the trade, the most prevalent being the telescope. So to get us off of first base, let’s define some of the key terms that pertain to telescopes to help you be able to talk to them more intelligently. The first area of specialization in telescopes has to do with the types of telescopes people use. The three designs of telescopes that most people use are the Refractor, the Reflector and the Schmidt Cassegrain telescope. The refractor telescope uses a convex lens to focus the light on the eyepiece. The reflector telescope has a concave lens which means it bends in. It uses mirrors to focus the image that you eventually see. The Schmidt Cassegrain telescope uses an involved system of mirrors to capture the image you want to see. A binocular telescope uses a set of telescopes mounted and synchronized so your view of the sky is 3-D. Beyond the basic types, other terms refer to parts of the telescope or to the science behind how telescopes work. Collimation is a term for how well tuned the telescope is to give you a good clear image of what you are looking at. You want your telescope to have good collimation so you are not getting a false image of the celestial body. Aperture is a fancy word for how big the lens of your telescope is. But it’s an important word because the aperture of the lens is the key to how powerful your telescope is. Magnification has nothing to do with it, its all in the aperture.
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2024 NFL Draft: 5 quarterbacks taken in the top 10 of the NFL Draft for the first time ever
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The 2024 NFL Draft has kicked off with the Chicago Bears selecting USC quarterback Caleb Williams with the first overall pick on Thursday night.
Bears fans at the event applauded Williams as he walked onto the stage to share an embrace with NFL commissioner Roger Goodell.
This year’s draft could well be be a blockbuster one, with heaps of highly-touted quarterback talents, a potentially all-time wide receiver group and overall value throughout. It’s the first time in NFL history five quarterbacks were selected in the top 10, and there are plenty more teams searching for an answer at the position.
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With teams loaded on veteran players, the draft allows the 32 franchises to stock up on young prospects before heading into training camp to fine tune their rosters ahead of the opening of the new season in September.
Earlier Thursday, NFL spokesperson Brian McCarthy said on X 150,000 fans are in attendance at the draft.
Here’s everything you need to know about the 2024 NFL Draft.
There are some years where the crop of quarterbacks coming out of college football isn’t awe-inspiring.
This is not one of those years.
There are a number of potentially franchise-changing signal-callers in the 2024 class, and chief among those was USC’s Williams.
Although he endured somewhat of a down year last season, Williams possesses all the attributes required to be a high-level quarterback in the NFL.
His throwing ability in various scenarios combined with his athletic talents make him the perfect example of the modern dual-threat QB and have led to comparisons to former No. 1 overall pick Kyler Murray.
The 22-year-old Williams has been high on many draft analysts’ radar for over a year now, following his Heisman Trophy winning season in 2022; he broke Trojan records in passing touchdowns, passing yards and passing efficiency that season.
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New mission could shed light on the secrets of the moon’s ‘hidden side
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Over the past few years, competing countries have turned the moon into a hotspot for activity not witnessed since the Apollo 17 astronauts departed from the lunar surface in 1972.
In one lunar region, Japan’s “Moon Sniper” mission has beaten the odds and survived three long, frigid lunar nights since its sideways landing on January 19.
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Engineers at the Japan Aerospace Exploration Agency didn’t design the spacecraft to last through one lunar night, a two-week period of freezing darkness, but the Moon Sniper continues to thrive amid lunar extremes and send back new images of its landing site.
Elsewhere, an international team of astronomers believes it has homed in on a crater created a few million years ago when something massive slammed into the lunar surface — and sent a chunk of the moon’s far side, or the side that faces away from Earth, hurtling into space. The hunk of moon became a rare quasi-satellite, or asteroid that orbits near Earth.
The Tianwen-2 mission will visit the space rock later this decade. But first, China has set its sights on returning to the moon’s “hidden side.”
The Chang’e-6 mission, which launched Friday, is aiming to bring back the first samples from the South Pole-Aitken basin, or the largest and oldest crater on the moon. Since the Chang’e 4 mission in 2019, China remains the only country to have landed on the moon’s far side, sometimes called the “dark side” of the moon.
The “dark side” of the moon is actually a misnomer, experts say, and the remote lunar hemisphere receives illumination — scientists just don’t know as much about the region as they’d like.
The far side, with its thicker crust, is vastly different from the near side that was explored during the Apollo missions.
Scientists hope that returning samples from the far side could solve some of the biggest remaining lunar mysteries, including the moon’s true origin.