#einstein’s 100-year-old general theory of #relativity predicted that light from stars would be stretched to longer wavelengths by the extreme gravitational field of a #blackhole, and the star would appear redder, an effect known as #gravitational red shift. 😲
NASA launches Parker solar probe on mission to 'touch the sun' #nasa has sent a probe to fly closer to the sun's #surface than any man-made object has ever gone. Unlike other space #missions, the #parkersolarprobe will have a long and complex orbit, since it's much more difficult to get to the #sun, according to NASA. The #earth travels 67,000 miles per hour in a sideways #motion relative to the sun to avoid being pulled in by its strong #gravitational forces. As such, any object travelling to the sun must cancel that motion. NASA's #parkersolar probe must drop 53,000 miles per hour of #sideways speed. In addition to being launched by the powerful Delta IV Heavy #rocket, it will perform seven #venus flybys over a seven-year period, relying on the planet's gravity to draw its orbit closer to the sun. The #probe is then set to #fly through the heated solar #atmosphere called the corona, to understand and be able to predict the behavior of #solarwinds. If all goes according to plan, the Parker solar probe will make its first close pass at the sun in November. أطلقت وكالة الفضاء الأميركية “#ناسا"، اليوم الأحد، #مسبار_باركر، أول مركبة فضائية من صنع الإنسان مصمّمة لعبور #الغلاف_الجوّي للشمس، في مهمة تاريخية من شأنها كشف ألغاز #العواصف الشمسية التي تضرب الأرض. وقال معلق "ناسا" مع انطلاق المسبار على متن #صاروخ "دلتا 4-هافي" من قاعدة كاب كانافيرال في #فلوريدا، عند الساعة 07:31 بتوقيت غرينيتش، "ثلاثة، اثنان، واحد، انطلاق". #uae#sharjah#sharjah24#الإمارات#الشارقة#الشارقة24#sharjah24_graphics
🌊How do TIDES work🌊? ▫️⠀⠀⠀⠀⠀⠀⠀⠀⠀ Have you ever set up your towels on a beach close to the water, and by the end of the day the water is creeping up closer and CLOSER to your setup😨? Or ever wondered why some places located on the cost of an ocean tend to “loose” their beaches at some points during the day? Well this is all due to #tides ! And.. leave it to science for an explanation☝🏼! ▫️⠀⠀⠀⠀⠀⠀⠀⠀⠀ To start, there are 3 main players in the formation of high and low tides; 1. The #moon 🌚 , 2. The sun 🌞 , and 3. The earth 🌏 . The gravitational pull of all three of these players contribute to the formation of tides. The biggest player however, is the MOON! Fun Fact‼️The moon actually exhibits a #gravitational pull on tides more than 2X stronger than the sun! ▫️⠀⠀⠀⠀⠀⠀⠀⠀⠀ In simple terms, (Swipe 👉🏼 for visual representation) if the moon is located at the top of the earth🔝, it would exhibit a gravitational pull towards itself. Since the oceans are fluid and nothing is holding them down, this creates a tidal bulge at the top and bottom of the earth. These tidal bulges are responsible for high tides. Now on the sides of the earth where the gravitational pull from the moon is less and the ocean is stretched over the length of the earth, there are low tides. As the earth rotates, different coasts experience different tides👌🏼. ▫️⠀⠀⠀⠀⠀⠀⠀⠀⠀ Where does the sun come in🤷🏻♀️? Well, when the sun and the moon are in alignment, the sun actually enhances the gravitational effects from the moon. Thus creating even higher tides… which are known as spring tides. ▫️⠀⠀⠀⠀⠀⠀⠀⠀⠀ Now, living in Canada and being surrounded by so many different lakes, I began to wonder why lakes don’t experience tides⁉️Well, one well accepted reason is that lakes are generally smaller bodies of water, and thus contain less mass. This
Last year, an independent team of scientists discovered that SIMP J01365663+0933473 was part of a very young group of stars. Its young age meant that it was in fact so much less massive that it could be a free-floating planet -- only 12.7 times more massive than Jupiter, with a radius 1.22 times that of Jupiter. At 200 million years old and 20 light-years from Earth, the object has a surface temperature of about 825 degrees Celsius, or more than 1500 degrees Farenheit. By comparison, the Sun's surface temperature is about 5,500 degrees Celsius. . Brown dwarfs are objects too massive to be considered planets, yet not massive enough to sustain nuclear fusion of hydrogen in their cores -- the process that powers stars. Theorists suggested in the 1960s that such objects would exist, but the first one was not discovered until 1995. They originally were thought to not emit radio waves, but in 2001 a VLA discovery of radio flaring in one revealed strong magnetic activity. . #browndwarf#planets#stars#extraterrestrial#astronomy#astrophysics#telescope#spacescience#blackhole#singularity#quantumentanglement#quantumphysics#jupiter#sun#earth#magnetic#field#gravitational#exploration#interstellar ..