Eyes on the Earth From the unique vantage point in space, NASA collects critical long-term observations of our changing planet. NASA applies ingenuity and expertise gained from decades of planetary and deep-space exploration to the study of our home planet. The Earth Science Division operates more than 20 satellites in orbit, sponsors hundreds of research programs and studies, and funds opportunities to put data to use for societal needs. We develop new ways to observe the oceans, land cover, ice, atmosphere, and life, and we measure how changes in one drive changes in others over the short and long term. Wildfires and Climate Change Earth's warming climate is amplifying wildland fire activity, particularly in northern and temperate forests. Learn More about Wildfires and Climate Change How Do We Know Climate Change is Real? There is unequivocal evidence that Earth is warming at an unprecedented rate. What is causing climate change? What are the effects of climate change?
Galaxy Zoo: Hubble Technical | MIT NSE Nuclear Information Hub For a general overview about nuclear physics, engineering, and power plants refer to the following documents prepared by the U.S. Nuclear Regulatory Commission (NRC): Nuclear Power for Electrical Generation Fission Process Boiling Water Reactor (BWR) Systems Pressurized Water Reactor (PWR) Systems Radiation Terminology Natural and Man-Made Source of Radiation Radiation Sources at Nuclear Power Plants Radiation Dose Standards Biological Effects of Radiation Radioactive Waste Management Transportation of Radioactive Materials Spent Nuclear Fuel Pool Design Basis per the NRC Background information about radiation and what it does pdf1 by Dr. Comments on the radiation levels resulting from the damaged nuclear power plants in Fukushima and the impact of these levels on human health. pdf2 by Dr. Radiation in their future: Dealing with the contaminated environment in Japan pdf3 by Dr. Like this: Like Loading...
openuniverse The Solar System: The Sun, Planets, Dwarf Planets, Moons, Asteroids, Comets, Meteors, and Solar System Formation Our solar system is filled with a wide assortment of celestial bodies - the Sun itself, our eight planets, dwarf planets, and asteroids - and on Earth, life itself! The inner solar system is occasionally visited by comets that loop in from the outer reaches of the solar system on highly elliptical orbits. In the outer reaches of the solar system, we find the Kuiper Belt and the Oort cloud. Still farther out, we eventually reach the limits of the heliosphere, where the outer reaches of the solar system interact with interstellar space.
16-19 student membership Aged between 16-19 and studying physics? Join the Institute of Physics for free and receive: Regular updates on what’s new in physicsExam and university guidanceInformation about careers from physicsThe chance to interact with other young physicists By joining the IOP not only will you become part of the UK’s largest physics community, but you will also get full access to Physics World online and physicsworld.com. You will also receive regular updates on upcoming events, competitions and lots of other exclusive 16-19 member offers such as the opportunity to take part in I’m a Scientist Get me out of here! Join here The Nine Planets Solar System Tour
Moon Phases Software Dear Friend, f you are interested in ... (Check any that apply to you.) ... and you want to predict, research, or track the moon, you will love this software! Thousands of people from around the world -- people with the same interests, hobbies or careers you selected -- have taken advantage of the benefits QuickPhase Pro provides. In the past, finding the phases of the moon or position of the moon was either inconvenient, or time-consuming, or hard to understand ... or all three. You can view all kinds of past or future moon data without complicated, expensive programs, technical jargon, or slow, tedious Internet research. I'll tell you all about the features of QuickPhase Pro in a minute, but first... Here's What I Discovered When I started looking for moon phase data, I immediately jumped on the Internet looking for free info. ... none of what I found was a real solution for viewing moon phases. What is the "Ideal Moon Phase Program"? If you are like me, you want a solution that: Nope! P.S.
Your Age on Other Worlds Want to melt those years away? Travel to an outer planet! <div class="js-required"><hr> This Page requires a Javascript capable browser <hr></div> Fill in your birthdate below in the space indicated. The Days (And Years) Of Our Lives Looking at the numbers above, you'll immediately notice that you are different ages on the different planets. The earth is in motion. The top-like rotation of the earth on its axis is how we define the day. The revolution of the earth around the sun is how we define the year. We all learn in grade school that the planets move at differing rates around the sun. Why the huge differences in periods? Johannes Kepler Tycho Brahe Kepler briefly worked with the great Danish observational astronomer, Tycho Brahe. Here you see a planet in a very elliptical orbit. Kepler's third law is the one that interests us the most. Let's just solve for the period by taking the square root of both sides: The Gravity Of The Situation Isaac Newton ©2000 Ron Hipschman
Stephen Hawking: 'There is no heaven; it's a fairy story' | Science A belief that heaven or an afterlife awaits us is a "fairy story" for people afraid of death, Stephen Hawking has said. In a dismissal that underlines his firm rejection of religious comforts, Britain's most eminent scientist said there was nothing beyond the moment when the brain flickers for the final time. Hawking, who was diagnosed with motor neurone disease at the age of 21, shares his thoughts on death, human purpose and our chance existence in an exclusive interview with the Guardian today. The incurable illness was expected to kill Hawking within a few years of its symptoms arising, an outlook that turned the young scientist to Wagner, but ultimately led him to enjoy life more, he has said, despite the cloud hanging over his future. "I have lived with the prospect of an early death for the last 49 years. "I regard the brain as a computer which will stop working when its components fail. The book sold a reported 9 million copies and propelled the physicist to instant stardom.
Solar Eclipse Page The next Total Eclipse of the Sun Visible from the USAClick for special web page on the Total Solar Eclipse of 2017 Aug 21 Solar Eclipses: Past and Future The following links give information on all eclipses of the Sun and Moon from 2000 through the current year. Dates, maps and details for 5000 years of solar eclipses can be found in: Five Millennium Catalog of Solar Eclipses: -1999 to +3000 The Javascript Solar Eclipse Explorer lets you calculate the visibility of solar eclipses from any city for hundreds of years in the past and future: Javascript Solar Eclipse Explorer Search for solar eclipses by date interval, type, and magnitude, and plot the results on Google maps: Five Millennium Solar Eclipse Search Engine Other useful links to past and future solar eclipses are as follows. Solar Eclipses: 2011 - 2020 The table below lists every solar eclipse from 2011 through 2020. The Key to Solar Eclipse Table contains a detailed description of each item in the table. Decade Tables of Solar Eclipses
The Incredible Beauty of the Orion Nebula Learn about the beauty of the Orion Nebula. Photo: NASA Goddard Space Flight Center The Orion Nebula is one of the brightest in the night sky and lies south of Orion’s Belt. It is 1344 (plus or minus 20) light years away and is the closest huge star formation area to earth. As such, it is the most photographed in the night sky and has taught us much about star and planetary formation. Photo: NASA, ESA, M. The area in the image above is a called the Trapezium and is an area of very young stars; six of the main stars that can often be seen from earth on a clear night. Photo: NASA, ESA, M. The Orion Nebula has been seen from earth for thousands of years. Photo: NASA/JPL-Caltech/STScI The Orion Nebula includes neutral clouds of gas and dust, ionized gas, associations of stars and reflection nebulae, which are clouds of dust reflecting the light of stars. Photo: Steve Black Orion is a stellar nursery where stars are born, and there are about 700 stars in various stages of birth within it.