Interstellar Insights

22

17

10

16

15

11

13

18

3

12

14

21

2

4

20

8

5

1

19

9

6

Second planet from the Sun

1 horizontal

Vertical Clues

2
Fourth planet from the Sun
3
Brightest moon of Saturn
4
Outer space boundary
8
Dwarf planet in the asteroid belt
10
Messenger of the gods; closest planet to the Sun
12
One billion years in astronomy
13
NASA’s Mars rover launched in 2020
15
First human to walk on the Moon
20
Effect caused by an object moving in curved spacetime
21
Type of celestial body that orbits a star
22
Dark patches on the Moon

Horizontal Clues

1
Second planet from the Sun
5
First US astronaut to orbit Earth
6
NASA’s famous telescope launched in 1990
2
Our home galaxy
9
Largest moon of Neptune
11
Modern constellation symbolized by a hunter
14
Largest gas giant
16
Einstein’s general theory of...
17
Largest volcano in the solar system
18
Interstellar cloud of dust and gas
19
Imaginary line that Earth spins around