May 2026
Create an account to continue using Similarweb
View website metrics, keywords, top marketing channels, market research tools, and more.
Create your free accounteso.org
Global Rank
#64,495
11,049Showing Similarweb estimated data.
Publicly validate your site’s metrics by connecting your GA4
Reflect your success
Verify your website's traffic and engagement metrics by connecting to Google Analytics
Bounce Rate
51.89%
Pages per Visit
6.95
Avg Visit Duration
00:08:48
Top 10 eso.org Competitors
The Top 10 Sites Like eso.org in May 2026 are ranked by their affinity to eso.org in terms of keyword traffic, audience targeting, and market overlap
Participating in a visit to ALMA would be the ideal scenario. However, it is not always possible to travel to Chile or reach San Pedro de Atacama to achieve this. That is why we are bringing the world of radio astronomy closer through a virtual tour where, on a transmedia site, you can discover 360º...
- Company
- ALMA Observatory
Bounce Rate
47.95%
Pages per Visit
2.56
Avg Visit Duration
00:01:01
Similarity Score
100%Explore the Creations Submitted for Hubble’s 30th Anniversary!
- Company
- - -
- Industry
- - -
Global Rank
#122,147
11,134Bounce Rate
44.46%
Pages per Visit
2.30
Avg Visit Duration
00:01:08
Similarity Score
98%This Hubble Space Telescope visible light image of the Trifid Nebula marks the 36th anniversary of the mission's launch on April 24.
- Company
- - -
- Industry
- - -
Global Rank
- -
Country Rank
- -
Category Rank
- -
Bounce Rate
51.18%
Pages per Visit
2.06
Avg Visit Duration
00:01:09
Similarity Score
92%NSF National Optical-Infrared Astronomy Research Laboratory (NSF NOIRLab) is the preeminent US national center for ground-based, nighttime optical and infrared astronomy
- Company
- NOIRLab
Global Rank
#159,627
25,616Bounce Rate
39.92%
Pages per Visit
2.76
Avg Visit Duration
00:01:54
Similarity Score
89%The EHT is an evolving network of telescopes. Observations in April 2017 were carried out with eight observatories in six geographical locations around the globe. For the observing campaign in 2018, one new telescope was added to the array, totalling nine observatories at seven sites. No observations with the EHT array were performed in 2019 and 2020. We plan to add additional observatories to the array for future observational campaigns -- two more are expected to join the array for observations in 2021, totalling eleven observatories at nine different locations around the globe. You can find a virtual tour of all EHT observatories here.
- Company
- - -
- Industry
- - -
Global Rank
#527,763
28,673Bounce Rate
39.71%
Pages per Visit
2.03
Avg Visit Duration
00:00:24
Similarity Score
87%- Company
- - -
- Industry
- - -
Global Rank
- -
Country Rank
- -
Category Rank
- -
Bounce Rate
53.18%
Pages per Visit
3.31
Avg Visit Duration
00:01:38
Similarity Score
85%The dawn of a new era in astronomy has begun as the world gets its first look at the full capabilities of the NASA/ESA/CSA James Webb Space Telescope. The telescope’s first full-colour images and spectroscopic data, which uncover a spectacular collection of cosmic features that have remained elusive until now, were released today.
- Company
- - -
- Industry
- - -
Global Rank
#155,457
29,554Bounce Rate
46.01%
Pages per Visit
3.42
Avg Visit Duration
00:01:06
Similarity Score
84%astronomy & astrophysics (a&a) is an international journal which publishes papers on all aspects of astronomy and astrophysics
- Company
- Astronomy & Astrophysics
Global Rank
#112,181
3,658Bounce Rate
42.95%
Pages per Visit
2.42
Avg Visit Duration
00:02:17
Similarity Score
81%On 6 June, the OpenWebSearch.eu consortium released a pilot of a new infrastructure that aims to make European web search fairer, more transparent and commercially unbiased. With strong participation by CERN, the European Open Web Index (OWI) is now open for use by academic, commercial and independent teams under a general research licence, with commercial options in development on a case-by-case basis. The OpenWebSearch.eu initiative was launched in 2022, with a consortium made up of 14 leading research institutions from across Europe, including CERN. The project aims to build a public web index that offers an alternative to existing indexes held by companies like Google (USA), Microsoft (USA), Baidu (China) and Yandex (Russia). Web indexes provide the back-end data infrastructure behind search engines, and today the companies that manage them determine what content is searchable and how it is ranked. Currently, Europe does not have a search index of its own, making it vulnerable to digital dependence. The OWI offers a clear alternative based on European values. The project’s cross-disciplinary nature, ensuring continuous dialogue between technical teams and legal, ethical and social experts, ensures that fairness and privacy are built into the OWI from the start. “Over thirty years since the World Wide Web was created at CERN and released to the public, our commitment to openness continues,” says Noor Afshan Fathima, IT research fellow at CERN. “Search is the next logical step in democratising digital access, especially as we enter the AI era.” The OWI facilitates AI capabilities, allowing web search data to be used for training large language models (LLMs), generating embeddings and powering chatbots. The CERN team has built key parts of the infrastructure that power the OWI’s crawling and indexing capabilities. This means that it tracks which webpages should be scanned. The system handles about 9 million URLs per hour, which equates to roughly 3 terabytes of pu
- Company
- CERN
Global Rank
#98,395
9,519Bounce Rate
51.55%
Pages per Visit
1.76
Avg Visit Duration
00:00:53
Similarity Score
79%the only federal laboratory dedicated to research, development, commercialization, and deployment of renewable energy and energy efficiency technologies.
Global Rank
#210,629
49,601Bounce Rate
51.51%
Pages per Visit
1.70
Avg Visit Duration
00:00:50
Similarity Score
76%eso.org's top 5 competitors in May 2026 are: almaobservatory.org, esahubble.org, science.nasa.gov, noirlab.edu, and more.
According to Similarweb data of monthly visits, eso.org’s top competitor in May 2026 is almaobservatory.org. eso.org 2nd most similar site is esahubble.org, and closing off the top 3 is science.nasa.gov.
noirlab.edu ranks as the 4th most similar website to eso.org and eventhorizontelescope.org ranks fifth in May 2026.
The other five competitors in the top 10 list are cfa.harvard.edu, esawebb.org, aanda.org, home.cern, and nrel.gov.