All Discoveries

Browse 17 tracked cosmic objects including comets, asteroids, meteors, galaxies, and interstellar phenomena.

Showing 17 discoveries

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HIGHasteroid

Apophis (99942)

Near-Earth asteroid, close approach 2029, collision risk assessed

Distance:0.28 AU
Magnitude:15.2
Discovery:Jun 2004
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🌟
MEDIUMcomet

C/2020 F3 (NEOWISE)

Brightest comet visible to naked eye in 2020

Distance:0.29 AU
Magnitude:0
Discovery:Mar 2020
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MEDIUMasteroid

Ryugu

Target of Hayabusa2 mission, carbonaceous asteroid

Distance:1.0 AU
Magnitude:20
Discovery:May 1999
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HIGHasteroid

Bennu

Target of OSIRIS-REx mission, potentially hazardous

Distance:1.2 AU
Magnitude:20.5
Discovery:Sep 1999
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☄️
HIGHcomet

67P/Churyumov-Gerasimenko

Target of Rosetta mission, famous for its unusual shape

Distance:1.8 AU
Magnitude:11.2
Discovery:Sep 1969
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🛸
HIGHinterstellar

1I/Oumuamua

First confirmed interstellar object, cigar-shaped

Distance:100+ AU
Magnitude:24
Discovery:Oct 2017
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HIGHsupernova

SN 1987A

Brightest supernova since 1604, in Large Magellanic Cloud

Distance:168,000 light-years
Magnitude:2.8
Discovery:Feb 1987
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HIGHgalaxy

Andromeda Galaxy (M31)

Nearest major galaxy, on collision course with Milky Way

Distance:2.5M light-years
Magnitude:3.4
Discovery:Ancient
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🌍
MEDIUMasteroid

Ceres

Dwarf planet, largest object in asteroid belt

Distance:2.8 AU
Magnitude:6.9
Discovery:Jan 1801
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HIGHcomet

3I/ATLAS

Interstellar comet with water ice detection at 3 AU

Distance:2.95 AU
Magnitude:15.9
Discovery:Oct 2025
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HIGHsupernova

SN 2023ixf

Type II supernova in M101, brightest in 10 years

Distance:21M light-years
Magnitude:10.5
Discovery:May 2023
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MEDIUMgalaxy

Whirlpool Galaxy (M51)

Interacting galaxy pair, classic spiral structure

Distance:23M light-years
Magnitude:8.4
Discovery:Oct 1773
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MEDIUMgalaxy

Triangulum Galaxy (M33)

Third largest galaxy in Local Group

Distance:3.0M light-years
Magnitude:5.7
Discovery:Ancient
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HIGHinterstellar

2I/Borisov

Second confirmed interstellar object, active comet

Distance:50+ AU
Magnitude:19
Discovery:Aug 2019
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☄️
HIGHmeteor

Perseid Meteor Shower

Peak: 50-100 meteors/hour, one of best annual showers

Distance:Earth orbit
Magnitude:0
Discovery:Annual (Aug 11-13)
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☄️
HIGHmeteor

Geminid Meteor Shower

Peak: 100-150 meteors/hour, brightest annual shower

Distance:Earth orbit
Magnitude:0
Discovery:Annual (Dec 13-14)
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☄️
MEDIUMmeteor

Leonid Meteor Shower

Peak: 10-20 meteors/hour, historically significant

Distance:Earth orbit
Magnitude:0
Discovery:Annual (Nov 17-18)
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