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.
{
"@context": [
"https://www.w3.org/ns/activitystreams",
{
"ostatus": "http://ostatus.org#",
"atomUri": "ostatus:atomUri",
"inReplyToAtomUri": "ostatus:inReplyToAtomUri",
"conversation": "ostatus:conversation",
"sensitive": "as:sensitive",
"toot": "http://joinmastodon.org/ns#",
"votersCount": "toot:votersCount",
"Hashtag": "as:Hashtag"
}
],
"id": "https://astrodon.social/users/mpi_grav/statuses/113990337916490919",
"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2025-02-12T10:02:01Z",
"url": "https://astrodon.social/@mpi_grav/113990337916490919",
"attributedTo": "https://astrodon.social/users/mpi_grav",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://astrodon.social/users/mpi_grav/followers"
],
"sensitive": false,
"atomUri": "https://astrodon.social/users/mpi_grav/statuses/113990337916490919",
"inReplyToAtomUri": null,
"conversation": "tag:astrodon.social,2025-02-12:objectId=44428103:objectType=Conversation",
"content": "<p>Reshma Krishnan Sudha is a PhD student in the “Space Interferometry” group.</p><p>She works on GRACE and its successor GRACE Follow-On (GRACE-FO), two highly successful satellite gravimetry missions for Earth observation. Satellite gravimetry, which involves the measurement of spatial and temporal changes in the gravity field caused by mass variations from space, provides a unique opportunity to study mass transport and improve our understanding of the Earth system. Changes in the mass distribution within and between Earth's atmosphere, oceans, groundwater, and ice sheets serve as fundamental indicators of the large-scale dynamics of the planet.</p><p>In GRACE-FO, the Laser Ranging Interferometer was used as a technology demonstrator alongside the established microwave-based ranging measurement. It uses laser interferometry to measure distance variations between satellites with nanometer precision. Reshma's current work lies in the in-flight characterization of the steering mirror, which is an important component in laser link acquisition procedures and also in the correction of spacecraft misalignment. The other focus is on building a breadboard optical bench assembly for optical beat note generation with flight-like beam parameters.</p><p>ℹ️ <a href=\"https://www.aei.mpg.de/1110531/reshma-krishnan-sudha\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">aei.mpg.de/1110531/reshma-kris</span><span class=\"invisible\">hnan-sudha</span></a></p><p><a href=\"https://astrodon.social/tags/IDWGS\" class=\"mention hashtag\" rel=\"tag\">#<span>IDWGS</span></a> <a href=\"https://astrodon.social/tags/WomenInSTEM\" class=\"mention hashtag\" rel=\"tag\">#<span>WomenInSTEM</span></a> <a href=\"https://astrodon.social/tags/WomenInScience\" class=\"mention hashtag\" rel=\"tag\">#<span>WomenInScience</span></a> <a href=\"https://astrodon.social/tags/Physics\" class=\"mention hashtag\" rel=\"tag\">#<span>Physics</span></a> <a href=\"https://astrodon.social/tags/PhD\" class=\"mention hashtag\" rel=\"tag\">#<span>PhD</span></a> <a href=\"https://astrodon.social/tags/Space\" class=\"mention hashtag\" rel=\"tag\">#<span>Space</span></a> <a href=\"https://astrodon.social/tags/Geodesy\" class=\"mention hashtag\" rel=\"tag\">#<span>Geodesy</span></a> <a href=\"https://astrodon.social/tags/GRACEFollowOn\" class=\"mention hashtag\" rel=\"tag\">#<span>GRACEFollowOn</span></a> <a href=\"https://astrodon.social/tags/Research\" class=\"mention hashtag\" rel=\"tag\">#<span>Research</span></a> <a href=\"https://astrodon.social/tags/Hannover\" class=\"mention hashtag\" rel=\"tag\">#<span>Hannover</span></a></p>",
"contentMap": {
"en": "<p>Reshma Krishnan Sudha is a PhD student in the “Space Interferometry” group.</p><p>She works on GRACE and its successor GRACE Follow-On (GRACE-FO), two highly successful satellite gravimetry missions for Earth observation. Satellite gravimetry, which involves the measurement of spatial and temporal changes in the gravity field caused by mass variations from space, provides a unique opportunity to study mass transport and improve our understanding of the Earth system. Changes in the mass distribution within and between Earth's atmosphere, oceans, groundwater, and ice sheets serve as fundamental indicators of the large-scale dynamics of the planet.</p><p>In GRACE-FO, the Laser Ranging Interferometer was used as a technology demonstrator alongside the established microwave-based ranging measurement. It uses laser interferometry to measure distance variations between satellites with nanometer precision. Reshma's current work lies in the in-flight characterization of the steering mirror, which is an important component in laser link acquisition procedures and also in the correction of spacecraft misalignment. The other focus is on building a breadboard optical bench assembly for optical beat note generation with flight-like beam parameters.</p><p>ℹ️ <a href=\"https://www.aei.mpg.de/1110531/reshma-krishnan-sudha\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">aei.mpg.de/1110531/reshma-kris</span><span class=\"invisible\">hnan-sudha</span></a></p><p><a href=\"https://astrodon.social/tags/IDWGS\" class=\"mention hashtag\" rel=\"tag\">#<span>IDWGS</span></a> <a href=\"https://astrodon.social/tags/WomenInSTEM\" class=\"mention hashtag\" rel=\"tag\">#<span>WomenInSTEM</span></a> <a href=\"https://astrodon.social/tags/WomenInScience\" class=\"mention hashtag\" rel=\"tag\">#<span>WomenInScience</span></a> <a href=\"https://astrodon.social/tags/Physics\" class=\"mention hashtag\" rel=\"tag\">#<span>Physics</span></a> <a href=\"https://astrodon.social/tags/PhD\" class=\"mention hashtag\" rel=\"tag\">#<span>PhD</span></a> <a href=\"https://astrodon.social/tags/Space\" class=\"mention hashtag\" rel=\"tag\">#<span>Space</span></a> <a href=\"https://astrodon.social/tags/Geodesy\" class=\"mention hashtag\" rel=\"tag\">#<span>Geodesy</span></a> <a href=\"https://astrodon.social/tags/GRACEFollowOn\" class=\"mention hashtag\" rel=\"tag\">#<span>GRACEFollowOn</span></a> <a href=\"https://astrodon.social/tags/Research\" class=\"mention hashtag\" rel=\"tag\">#<span>Research</span></a> <a href=\"https://astrodon.social/tags/Hannover\" class=\"mention hashtag\" rel=\"tag\">#<span>Hannover</span></a></p>"
},
"attachment": [],
"tag": [
{
"type": "Hashtag",
"href": "https://astrodon.social/tags/idwgs",
"name": "#idwgs"
},
{
"type": "Hashtag",
"href": "https://astrodon.social/tags/womeninstem",
"name": "#womeninstem"
},
{
"type": "Hashtag",
"href": "https://astrodon.social/tags/WomenInScience",
"name": "#WomenInScience"
},
{
"type": "Hashtag",
"href": "https://astrodon.social/tags/physics",
"name": "#physics"
},
{
"type": "Hashtag",
"href": "https://astrodon.social/tags/phd",
"name": "#phd"
},
{
"type": "Hashtag",
"href": "https://astrodon.social/tags/space",
"name": "#space"
},
{
"type": "Hashtag",
"href": "https://astrodon.social/tags/geodesy",
"name": "#geodesy"
},
{
"type": "Hashtag",
"href": "https://astrodon.social/tags/gracefollowon",
"name": "#gracefollowon"
},
{
"type": "Hashtag",
"href": "https://astrodon.social/tags/research",
"name": "#research"
},
{
"type": "Hashtag",
"href": "https://astrodon.social/tags/hannover",
"name": "#hannover"
}
],
"replies": {
"id": "https://astrodon.social/users/mpi_grav/statuses/113990337916490919/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://astrodon.social/users/mpi_grav/statuses/113990337916490919/replies?only_other_accounts=true&page=true",
"partOf": "https://astrodon.social/users/mpi_grav/statuses/113990337916490919/replies",
"items": []
}
},
"likes": {
"id": "https://astrodon.social/users/mpi_grav/statuses/113990337916490919/likes",
"type": "Collection",
"totalItems": 3
},
"shares": {
"id": "https://astrodon.social/users/mpi_grav/statuses/113990337916490919/shares",
"type": "Collection",
"totalItems": 3
}
}