Comet Lovejoy is the first comet we’ve found that disperses ethyl alcohol into space, as much as would be in 500 bottles of wine every second.
To send Red Dragon spacecraft to Mars, SpaceX is building a mega-rocket called Falcon Heavy. Based on the company’s successful Falcon 9, Falcon Heavy consists of three core rocket stages, each of which is equipped with landing legs for reusability. They would use the capsule’s thrusters to make a landing.
This artist’s illustration shows how the capsule could enter Mars’ atmosphere. SpaceX has successfully returned their capsules to Earth during space station resupply missions for NASA.
The Dragon can carry seven astronauts to and from destinations like the International Space Station (not yet a manned mission to Mars I’d guess 😄). Here’s an illustration of the Dragon Version 1 (the new version has some differences), to get the idea:
credit: SpaceX, Karl Tate/Space.com
The rings of Saturn, observed by the Cassini space probe on May 3, 2017.
If you want us to put it in the simplest words possible, the Zone System is a helps us get the right exposure in all our photos, every time, without fail, even in the strangest light settings, and without a trusty matrix meter. It is a magical system conceived of by none other than Ansel Adams himself, along with photographer Fred Archer in the late 1930s. As the father of landscape describes himself, the Zone System is “not an invention of mine; it is a codification of the principles of sensitometry, worked out by Fred Archer and myself at the Art Center School in Los Angeles, around 1939-40.” These masters of photography created the Zone System to help us expose in tricky lighting situations where the dynamic range is out of whack, or the lighting is fooling your light meter into creating exposures that are too bright or too dark.
The Zone System was originally developed for black and white sheet film, which was the only type used in those days. Sheet film was individually developed on standard exposure papers, but today we have color roll film that can be mass developed on papers with varying exposures. The Zone system is as much applicable to these “modern” methods as they were to the film it was created for, and can even help digital photographers get perfect exposures. And guess what? Digital photographers, the Zone System can work for you too!
Technically you probably don’t. However, for those of you who are exposure perfectionists, the Zone System is extremely effective in measuring different tones and the dynamic range of a frame that you are about to shoot. It helps you make the perfect exposure with just a spot meter to work with. This gives you immense control over what you’re shooting. You don’t just make guesses at what the right exposure might be, or waste film bracketing “just in case”. Thus, you can easily figure out when you require extra lighting, and what kind and amount of lighting that might be, or whether there is need for a fill flash to get the right brightness. It can also help you figure out if you need graduated neutral density filters.
The zone system is highly beneficial in capturing accurate images when the camera is unable to set the exposure to an accurate reading, so that you get to decide what your image will turn out like, and you know exactly how it will look before you make the exposure.
A camera’s metering system measures accurate exposure readings by focusing on the middle grey tones, which is 18% grey. This grey is the average of black and white. So, when you are shooting in a bright area, your camera will try to dim the light by bringing it down to the average and making the image underexposed in the process. Similarly, when you are shooting in a dark area, your camera will try to increase the brightness of the image, making it over-exposed. Understanding this mechanism is crucial to understanding how the zone system can be used.
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After five years and 1.7 billion miles the probe accomplish a risky braking manoeuvre in order for it to be hooked by Jupiter’s gravity. NASA’s Jet Propulsion Laboratory, California received the confirmation signal which confirmed Juno had finally entered orbit on July 4. Juno will begin a two-year mission of discovery which will help scientists better understand one of the largest objects in our solar system.
Using Juno’s complex array of cameras and sensors the team hope to answer some long-awaited questions including whether Jupiter actually has a solid core or if it really is just a swirling ball of gas. Another focus will be the Great Red Spot - a massive storm several times the size of Earth that has been raging on the surface of Jupiter for what appears to be hundreds of years. Juno is the fastest spacecraft to ever enter orbit around a planet, travelling at an astonishing 130,000mph by the time it reached the gas giant.
The Clansman PRC-320 - Plessey RT-320 Military Manpack Transciever [HD] - M0VST (by markbeermonster)
Starry Night Castle. Credit & Copyright: P-M Hedén
The Pleiades star cluster seems to lie just beyond the trees above a dark castle tower in this dramatic view. This starry sky also features bright star Aldebaran below the Pleiades and a small, faint, fuzzy cloud otherwise known as Comet Holmes near picture center at the top of the field. Starry Night Castle might be an appropriate name for the medieval castle ruin in the foreground. But its traditional name is Mörby Castle, found north of Stockholm, near lake Skedviken in Norrtälje, Sweden.
Orion nebula & The running man nebula, by TimMorrill
Orion nebula & The running man nebula.
Great Red Spot of Jupiter
Had this been 2002, this moment would have been mind blowing!
Mostly because I would be posting a photo on a website that wasn’t around, from a phone technology that didn’t exist yet! I wish I had means of seeing what was on their VHS tapes…