All these types of waves--radio, infrared, X-ray and gamma-ray--are similar to visible light in that they are all forms of electromagnetic radiation and differ only in their wavelengths and energy levels. ...
Earth (or, "the earth") is the only planet presently known to support life, and its natural features are the subject of many fields of scientific research. Within the solar system, it is third nearest to the sun; it is the largest terrestrial planet and the fifth largest overall. Its mo...
The boundary to interstellar space is far away, but perhaps not as far as you might think. In fact, part of oursolar systemis in interstellar space. How can this be? The definition of this interstellar space boundary is the region wherethe sun's magnetic bubble weakens and comes to an e...
This can have several results; it can make an object shift its apparent position in the sky over Earth, or it can cause a single object to appear at multiple points in the sky, occasionally giving rise to spectacular formations like rings and crosses made from the same object. You may ...
NASA’S VOYAGER 1 SPACECRAFT RESUMES SENDING DATA TO EARTH FROM INTERSTELLAR SPACE AFTER 5-MONTH OUTAGE "Can we get to a point where we can be able to say, you know, 'It'll be 5 o’clock on Thursday,'? But we're not there yet," Van Belle said. Based on the brightening and dim...
As it does so,it expands, and in about 2 billion years, it will have grown so much that the heat will make life on planet Earth unbearable.While all this sounds a little terrible, take comfort from the fact that the chance of being hit by a giant interstellar projectile(星际碰撞物) ...
Why might a beach-ball burst if left in the sun? What substance a bullet is made up of? What would happen to your body if a nuclear bomb was dropped 2 feet away from you? What would happen if you drilled a hole through the center of the earth and dropped something down i...
Voyagers 1 and 2 were launched in 1977 to explore the outer reaches of our solar system and interstellar space. Each carries a Golden Record containing music, ambient sounds from Earth and 116 images of our planet and solar system. The golden record (left) with a schematic of its diagrams...
Celestial bodies are intriguing. They are some of the most interesting things that you will ever get to study. The Earth is the birthplace of the human race. We are a species capable of great things. But one of the most important questions that any person can ask is that are we the on...
“Study of a Near-Term Interstellar Probe” and on Tuesday, Alan Stern will give another briefing on the Planetary Protection Independent Review Board (PPIRB) that he chaired. The National Academies’ Space Studies Board (SSB) is setting up a committee to review the PPIRB report and rumors ...