Someday these answers may seem as obvious to us as the earth orbiting the sun—or perhaps as ridiculous as a tower of tortoises. 也许有一天这些答案会像我们认为地球绕着太阳运动那样显而易见——当然也可能像乌龟塔那般荒唐可笑。 Only time (whatever that may be) will tell. 唯有时间(不管其含义...
suggest answers to some of theselongstanding questions. Someday these answers may seem as obvious to us as the earth orbiting the sun – orperhaps as ridiculous as a tower of tortoises. Only time (whatever that may be) will tell.
Astronomy Picture of the Day——蜘蛛星云的红外影像 The Spider Nebula in Infrared Image Credit: NASA, JPL-Caltech, Spitzer Space Telescope, 2MASS Explanation: Will the spider ever catch the fly? Not if both are large emission nebulas toward the constellation of the Charioteer (Auriga). The spi...
The movie opens two & 1/2 years after the completion of the starship Enterprise's five year mission. The spaceship is orbiting Earth, in a dry-dock of sorts, completing a complex overhaul. The planet Earth is in the path of a potential destructive alien intruder. The now Admiral Kirk (...
根据第一段的In the centre, there's our star, the sun. Orbiting the sunare eight planets, including Earth. But what about planets outside our solar system?和第二段首句About 15 years ago, scientists developedthe tools to detect these"exoplanets".可推知exoplanets是指太阳系以外的行星。2.本题...
The Earth is Warming We know the planet is warming fromsurface temperaturestationsandsatellitesmeasuring the temperature of the Earth's surface and loweratmosphere. We also have various tools which have measured thewarming of the Earth's oceans. Satellites have measured anenergy imbalance at the top...
Life can be confusing. People sometimes struggle with the idea of who they are and where they belong in the grand scheme of things. If Pluto had feelings, imagine what it has gone through in its 87 years. When first discovered in 1930, the small mass orbiting the sun at the edge of ...
Early in the morning on July 2, 2014, the Orbiting Carbon Observatory-2 was launched into space from Vandenberg AFB on a Delta-II rocket. It made its 30-second launch window, achieved separation, went into polar orbit, and deployed its solar arrays. And I got to be there, or pretty cl...
Geometrically, in the above picture taken in August by the robot Cassini spacecraft now orbiting Saturn, the Sun is behind the camera but on the other side of the ring plane. Such a vantage point gives a breathtaking views of the most splendid ring system in the Solar System. Strangely, ...