TRACKER-1ALPHA
48.8566°N / 2.3522°E

Science / Discoveries

73 Notable results

28 breakthroughs, 37 major results and 41 highlights from the last 3 years — from 31 spacecraft tracked by TRACKER-1. The feed prioritizes freshness and result type (image, measurement, discovery, milestone).

All discoveries

Cheyava Falls — sample with biosignature potential

The mapped sample shows “leopard-eye” spots and sulfate veins compatible with fossil microbial activity; Earth-based analyses to come.

NASA/PerseverancePerseverance

Euclid Q2 — 26 million galaxies

Second data release: an additional 132 deg², shapes and distances of 26 million galaxies for precision cosmology.

ESA/Euclid Q2Euclid

Carbon dioxide detected in a protoplanetary disk

NIRSpec identifies gaseous CO₂ in the disk of PDS 70: first direct measurement of carbon chemistry during planetary formation.

Nature 620:516James Webb

Euclid Q1 — cosmological map

First major data release: 14 million galaxies over 132 deg² to constrain dark matter.

ESA/EuclidEuclid

JADES field — early galaxies

Identification of z > 14 candidates in the Deep Advanced Extragalactic Survey.

ESA/WebbJames Webb

Closest dormant black hole

Gaia BH3 (~2 kpc): a 33 M☉ stellar black hole detected through pure astrometry.

ESA/GaiaGaia

First images of the solar poles

Orbital inclination at 17°: unprecedented view of the polar regions off the ecliptic plane.

ESA/Solar OrbiterSolar Orbiter

Sub-Neptune in the habitable zone of an M dwarf

TOI-4633 c: a planet of radius ~2.6 R⊕ in the habitable zone of a nearby cool star, a candidate for atmospheric characterization.

AJ 167:241TESS

First Euclid Sky Atlas

Initial coverage of 132 deg² with unprecedented photometric quality — revealing roughly 11 million galaxies in just a few days.

Euclid

Bennu sample delivered to Earth

122 g of primitive carbonaceous material — the largest sample return since Apollo.

OSIRIS-APEX

Launch toward Europa

NASA's largest planetary probe en route to Jupiter to map the ocean beneath Europa's ice.

Europa Clipper

Silicate clouds on a brown dwarf

MIRI spectroscopy revealing the composition and dynamics of silicate clouds on the brown dwarf Luhman 16 A/B.

arXiv:2505.00794James Webb

Oldest black hole ever observed

Detection of the UHZ1 black hole dating back roughly 470 million years after the Big Bang.

James Webb

Carbon-bearing molecules on K2-18 b

Detection of methane and CO₂ plus a tentative hint of DMS in the atmosphere of a potentially habitable sub-Neptune exoplanet.

James Webb

Origin of the slow solar wind mapped

EUI and SoloHI identify the magnetic structures at the origin of the slow solar wind at the edge of coronal holes.

A&A 694:A71Solar Orbiter

Data Release 4 — astrometry focus groups

Second batch of DR4: positions and proper motions for ~500 million sources, refinement of binaries and astrometric exoplanets.

ESA/Gaia DR4Gaia

Rocky planet around an M dwarf

Discovery of a super-Earth in the habitable zone around a nearby cool star (TOI-715 b).

MNRAS 527:35TESS

Data Release 3 — binary stars & spectra

1.8 billion stars plus more than 800,000 binary systems. Detection of Gaia BH1, the closest black hole to the Sun.

Gaia

Cheyava Falls — high-resolution image

Mastcam-Z documents the “leopard” calcium sulfate veins in Neretva Vallis.

NASA/JPLPerseverance

First deep field — SMACS 0723

The deepest infrared image of the universe ever taken: gravitational lensing revealing galaxies dating back 13 billion years.

James Webb

Flyby of asteroid Donaldjohanson

Second target in the main belt before the series of Jupiter trojans.

NASA/LucyLucy

Atmosphere of a brown dwarf exoplanet

MIRI/WFC3 spectroscopy revealing silicate and hydrogen sulfide clouds on WISE 0855.

arXiv:2410.10933James Webb

Fourth flyby — 165 km altitude

A record close flyby. Mapping of previously unseen regions of the south pole.

BepiColombo

Cheyava Falls rock — potential biosignature

"Leopard spot" patterns and organic molecules in Neretva Vallis. A potential biosignature, to be confirmed in the laboratory.

Perseverance

Liquid-water lake beneath the Martian south pole

The MARSIS radar detects a 20-km briny liquid-water reservoir beneath the south pole.

Mars Express

Sole Neptune flyby

Discovery of the Great Dark Spot and the fastest winds in the solar system (2,100 km/h).

Voyager 2

Sole Uranus flyby

The only probe to fly past Uranus: 11 new moons, 2 rings and a magnetic field tilted 60°.

Voyager 2

Crab Nebula in infrared

Detailed mapping of the supernova remnant: dust filaments and ejecta still invisible in visible light.

ESA/WebbJames Webb

Active volcanism on Io

Close flyby at 1,500 km: plumes and lava flows observed by JunoCam and JIRAM.

NASA/JunoJuno

First powered flight on another planet

The Ingenuity helicopter performs a 39-second hover.

Perseverance

Historic Pluto flyby

First high-resolution imagery of Pluto and Charon: ice mountains, Sputnik Planitia, blue atmosphere.

New Horizons

Hubble Ultra Deep Field

~10,000 galaxies in a tiny patch of sky, out to 13 billion light-years.

Hubble

Hubble Deep Field

10 days of exposure on 1/24 millionth of the sky: 3,000 galaxies in an apparently empty patch.

Hubble

The Pillars of Creation

Iconic image of columns of gas and dust in the Eagle Nebula (M16), a cradle of star formation.

Hubble

Pale Blue Dot

At Carl Sagan's request, Voyager 1 turns back to photograph Earth from 6.4 billion km away.

Voyager 1

Focus Group 5 — partial catalogue

First batch of Data Release 4: positions and motions for ~500 million sources.

ESA/Gaia DR4Gaia

10,000th exoplanet candidate

The TESS catalogue crosses 7,000 cumulative confirmed TOIs together with partner missions.

ApJ Suppl. (T16)TESS

First scientific results

5 images & 10 papers, first glimpse of the Sky Atlas.

EuclidEuclid

First images

Perseus cluster, Horsehead Nebula, NGC 6822.

EuclidEuclid

First spacecraft in the solar corona

Parker crosses the Alfvén surface in April 2021, the magnetic boundary of the corona.

Parker Solar Probe

Interstellar comet 12P/Pons-Brooks

Spectro-imaging follow-up of the “devil” comet during its perihelion passage.

NASA/APODHubble

Binary asteroid Dinkinesh

First Trojan asteroid flyby: revealing an unexpected contact-binary satellite.

Lucy

Atmosphere of an exoplanet

First chemical detection (sodium) in the atmosphere of an exoplanet: HD 209458 b.

Hubble

Subsurface water ice map

MARSIS refines the extent of ice deposits at Martian mid-latitudes.

ESA/Mars ExpressMars Express

Seasonal cycle of Martian methane

SAM confirms annual variations of CH₄ correlated with temperature and pressure.

Science (Webster 2018)Curiosity

El Gordo cluster in X-rays

Mapping of the hot gas of the most massive known cluster at z ~ 0.87.

NASA/ChandraChandra X-ray

Organic molecules in mudstone

Detection of thiophenes and organic molecules preserved for 3 billion years.

Curiosity

Martian atmospheric loss quantified

MAVEN measures the erosion of the atmosphere by the solar wind — key to Mars' climate history.

MAVEN

Departure toward the metallic asteroid

The first mission to a primitive metallic body — investigating a possible exposed protoplanet core.

Psyche

Crossing of the heliopause

The first human-built object to enter the interstellar medium.

Voyager 1