| Year | Month | Day | Event |
|---|
| 13800000000 BC |
|
|
The Big Bang |
| 3340 BC |
Nov |
30 |
Earliest Believed Record Of Eclipse |
| 240 BC |
May |
25 |
Perihelion Passage Of Halley's Comet Recorded |
| 1604 |
Oct |
09 |
The Most Recent Supernova Was Supernova 1604 |
| 1618 |
Mar |
08 |
Kepler Discovers Law Of Planetary Motion |
| 1655 |
Mar |
25 |
Huygens Discovered Saturn's Giant Moon Titan |
| 1675 |
Mar |
04 |
John Flamsteed , First Astronomer Royal |
| 1781 |
Mar |
13 |
William Herschel Discovers Uranus |
| 1787 |
Jan |
11 |
Herschel Discovered Titania, Oberon, The Uranus Moons |
| 1836 |
May |
15 |
'Baily's Beads' Observed By Francis Baily During Eclipse |
| 1846 |
Oct |
10 |
Neptune's Moon, Triton, Discovered By Lassell |
| 1851 |
Oct |
24 |
Lassell Discovers Moons Of Uranus |
| 1877 |
Aug |
12 |
Asaph Hall Discovers The Mars Moon Deimos |
| 1877 |
Aug |
18 |
Asaph Hall Discovers Martian Moon Phobos |
| 1930 |
May |
01 |
The Dwarf Planet Pluto Is Officially Named |
| 1965 |
Jul |
14 |
Mariner 4 Photographs Mars |
| 1966 |
Dec |
18 |
Walker Discovers Saturn Moon Epimetheus |
| 1990 |
Sep |
24 |
Saturn's Periodic Great White Spot |
| 1993 |
Mar |
24 |
Discovery Of Comet Shoemaker–Levy 9 |
| 1995 |
Jul |
23 |
Comet Hale-Bopp Discovered And Seen |
| 2002 |
Sep |
25 |
Vitim Event In Siberia; Possible Bolide Impact |
| 2004 |
Sep |
29 |
Asteroid 4179 Passed By The Earth |
| 2009 |
Mar |
07 |
Kepler Observatory Designes Is Launched |
| 2012 |
Jul |
11 |
Pluto's Fifth Moon, Styx, Discovered |
| 2013 |
Jul |
01 |
Neptune's Moon S/2004 N 1 Is Discovered |
| 2013 |
Nov |
03 |
Solar Eclipse From Africa To US |
| 2014 |
Apr |
15 |
Blood Moon Occurs During Total Eclipse |
| 2014 |
Apr |
17 |
NASA Confirms Earth-size Planet Discovered |
| 2014 |
Oct |
19 |
Comet Passes Within 140,000 Km Of Mars |
| 2015 |
Mar |
20 |
Solar Eclipse, Equinox, Supermoon On Same Day |