A small tool to view real-world ActivityPub objects as JSON! Enter a URL
or username from Mastodon or a similar service below, and we'll send a
request with
the right
Accept
header
to the server to view the underlying object.
{
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"https://www.w3.org/ns/activitystreams",
{
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"conversation": "ostatus:conversation",
"sensitive": "as:sensitive",
"toot": "http://joinmastodon.org/ns#",
"votersCount": "toot:votersCount",
"blurhash": "toot:blurhash",
"focalPoint": {
"@container": "@list",
"@id": "toot:focalPoint"
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"Hashtag": "as:Hashtag"
}
],
"id": "https://mastodon.social/users/coreyspowell/statuses/114739563946720906",
"type": "Note",
"summary": null,
"inReplyTo": "https://mastodon.social/users/coreyspowell/statuses/114739552655594650",
"published": "2025-06-24T17:40:03Z",
"url": "https://mastodon.social/@coreyspowell/114739563946720906",
"attributedTo": "https://mastodon.social/users/coreyspowell",
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],
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"content": "<p>Rubin's persistent gaze also spotted flickering stars hidden in that same image of the Virgo Cluster. The circles indicate 46 RR Lyrae variables. </p><p>During its 10-year primary mission, the observatory will detect millions (!) of supernova explosions, helping to map the overall expansion of the universe. (4/4)</p><p><a href=\"https://www.nsf.gov/news/first-imagery-nsf-doe-vera-c-rubin-observatory\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">nsf.gov/news/first-imagery-nsf</span><span class=\"invisible\">-doe-vera-c-rubin-observatory</span></a> <a href=\"https://mastodon.social/tags/wow\" class=\"mention hashtag\" rel=\"tag\">#<span>wow</span></a> <a href=\"https://mastodon.social/tags/cosmology\" class=\"mention hashtag\" rel=\"tag\">#<span>cosmology</span></a> <a href=\"https://mastodon.social/tags/nature\" class=\"mention hashtag\" rel=\"tag\">#<span>nature</span></a></p>",
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"en": "<p>Rubin's persistent gaze also spotted flickering stars hidden in that same image of the Virgo Cluster. The circles indicate 46 RR Lyrae variables. </p><p>During its 10-year primary mission, the observatory will detect millions (!) of supernova explosions, helping to map the overall expansion of the universe. (4/4)</p><p><a href=\"https://www.nsf.gov/news/first-imagery-nsf-doe-vera-c-rubin-observatory\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">nsf.gov/news/first-imagery-nsf</span><span class=\"invisible\">-doe-vera-c-rubin-observatory</span></a> <a href=\"https://mastodon.social/tags/wow\" class=\"mention hashtag\" rel=\"tag\">#<span>wow</span></a> <a href=\"https://mastodon.social/tags/cosmology\" class=\"mention hashtag\" rel=\"tag\">#<span>cosmology</span></a> <a href=\"https://mastodon.social/tags/nature\" class=\"mention hashtag\" rel=\"tag\">#<span>nature</span></a></p>"
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"url": "https://files.mastodon.social/media_attachments/files/114/739/557/094/300/149/original/972747e675c3de6d.png",
"name": "In this video still, NSF–DOE Vera C. Rubin Observatory showcases 46 subtly pulsating RR Lyrae variable stars in an early glimpse of the dynamic sky Rubin will reveal. Over the next 10 years, Rubin will detect up to about 100,000 of these stars extending out to more than a million light-years away, allowing scientists to map the outer reaches of our Galaxy and explore the structure of the Galactic halo that surrounds the Milky Way and extends nearly halfway to our closest neighbor, the Andromeda galaxy. ",
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{
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