content: Cool Cosmos is NASA's infrared education and outreach website, with information for all NASA-involved infrared missions, including the Spitzer Space Telescope, WISE, the Herschel Space Observatory, the James Webb Space Telescope (JWST), SOFIA, 2MASS, WFIRST, Euclid and SPICA. This site is hosted at the Infrared Processing and Analysis Center (IPAC), and funded by NASA's Spitzer Science Center, based on the campus of the California Institute of Technology in Pasadena. property: og:description
This Registry database contains ONLY .EDU domains. The data in the EDUCAUSE Whois database is provided by EDUCAUSE for information purposes in order to assist in the process of obtaining information about or related to .edu domain registration records. The EDUCAUSE Whois database is authoritative for the .EDU domain. A Web interface for the .EDU EDUCAUSE Whois Server is available at: http://whois.educause.edu By submitting a Whois query, you agree that this information will not be used to allow, enable, or otherwise support the transmission of unsolicited commercial advertising or solicitations via e-mail. The use of electronic processes to harvest information from this server is generally prohibited except as reasonably necessary to register or modify .edu domain names. ------------------------------------------------------------- Domain Name: CALTECH.EDU Registrant: California Institute of Technology Information Management Systems and Services MS 1-10 1200 East California Boulevard Pasadena, CA 91125 USA Administrative Contact: Domain Admin California Institute of Technology 1200 E. California Blvd. MS 1-10 Pasadena, CA 91125 USA +1.6263953500 [email protected] Technical Contact: California Institute of Technology 1200 E. California Blvd. MS 1-10 Pasadena, CA 91125 USA +1.6263953500 [email protected] Name Servers: NS0090.SECONDARY.CLOUDFLARE.COM NS0239.SECONDARY.CLOUDFLARE.COM Domain record activated: 06-Jan-1986 Domain record last updated: 30-Jan-2026 Domain expires: 31-Jul-2027
Robots.txt
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搜索引擎优化审核
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响应代码
200 ok
状态 200 正常 - 页面加载正确。
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字符编码
Page: utf-8, Header: utf-8
HTML 和标头之间的字符编码一致。
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页面尺寸
14291 bytes
页面大小可以接受快速加载。
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资源
30 total
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赫尔夫朗标签
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HTTPS
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已启用安全 HTTPS 连接。
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压缩
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缓存
max-age=0, private, must-revalidate
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页面速度
6.36 ms
出色的加载速度。
页面搜索引擎优化
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标题
Cool Cosmos
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元描述
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H1 标题
1 found - "Cool Cosmos"
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字数统计
69
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内容和用户体验
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图片
25 total, 0 missing ALT
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视口
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打开图
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结构化数据
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页
片段
4
/ask/4-what-is-the-s...
The Sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5%.
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An Astronomical Unit ( AU ) is the average distance between Earth and the Sun , which is about 93 million miles or 150 million kilometers.
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Earth is slightly smaller when measured between the North and South Poles which gives a diameter of 7,907 miles (12,725 kilometers). Earth bulges out a bit more ...
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Is there any water on Mercury? Recent data show that water ice may exist in the bottoms of craters at Mercury's poles . Although Mercury is the closest planet ...
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Why do we put telescopes in space? Telescopes are placed into orbit around the Earth or are sent farther out into space to get a clearer view of the Universe.
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/ask/63-what-are-the...
The highest temperature ever recorded on Earth was 136 Fahrenheit (58 Celsius) in the Libyan desert. The coldest temperature ever measured was -126 Fahrenheit ...