swap_horiz RHESSI Alternatives

1

Apollo 8

The Apollo 8 mission involved a three-man NASA crew – Frank Borman, James Lovell, and William Anders – undertaking the f...

Lunar Nasa Apollo Past

9.7 Brilliant

2

Mars Exploration Rover Opportunity

The Opportunity rover was a NASA mission designed to study the geology of Mars’ Meridiani Planum region. Launched in 200...

Geology Nasa Mars Rover

9.5 Brilliant

3

Apollo 17

The Apollo 17 mission represents NASA’s concluding journey to the Moon within the Apollo program. Launched in December 1...

Lunar Nasa Apollo Past

9.4 Excellent

4

Cosmic Background Explorer

The Cosmic Background Explorer (COBE) was a NASA space mission launched in 1989 to study the cosmic microwave background...

Survey Cosmology Nasa Microwave

9.4 Excellent

5

Viking 1

The Viking 1 mission involved both an orbiter and a lander deployed to Mars in 1975. It achieved the historic feat of de...

Nasa Mars Past Lander

9.4 Excellent

6

WMAP

The Wilkinson Microwave Anisotropy Probe (WMAP) was a NASA space mission that studied the cosmic microwave background ra...

Survey Cosmology Nasa Microwave

9.3 Excellent

7

OSIRIS-REx

The OSIRIS-REx spacecraft undertook a NASA mission to study the asteroid Bennu. Launched in 2016, it successfully collec...

Nasa Past Asteroid Sample Return

9.3 Excellent

8

Pioneer 10

NASA’s Pioneer 10 is a historic space probe launched in 1972. It achieved several significant milestones including being...

Nasa Deep Space Jupiter Past

9.2 Excellent

9

Ingenuity Mars Helicopter

The Ingenuity Mars Helicopter is a small rotorcraft developed by NASA for exploration on Mars. It achieved unprecedented...

Helicopter Technology Nasa Mars

9.2 Excellent

10

Space Shuttle STS-1

The Space Shuttle STS-1 mission marked America’s first crewed launch of the Space Shuttle program. This historic flight...

Nasa Past Shuttle Orbiter

9.1 Excellent

11

Pioneer 11

NASA’s Pioneer 11 is a historic space mission launched in 1973. It achieved the first-ever close flyby of Jupiter and su...

Nasa Jupiter Saturn Past

9.0 Excellent

12

Mariner 2

The Mariner 2 spacecraft represents a pivotal moment in space exploration. Launched by NASA in 1962, it achieved the fir...

Nasa Past Venus Firsts

8.9 Great

13

DART

NASA’s DART mission successfully impacted the asteroid Dimorphos in October 2022. This marked the first demonstration of...

Impact Nasa Past Asteroid

8.9 Great

14

Viking 2

The Viking 2 spacecraft was a NASA mission launched in 1976 to explore Mars. It landed near Utopia Planitia and function...

Nasa Mars Past Lander

8.8 Great

15

NEAR Shoemaker

The NEAR Shoemaker mission, a NASA project, studied the near-Earth asteroid 433 Eros. Launched in 1998, it successfully...

Nasa Past Asteroid Orbiter

8.8 Great

16

Mars Exploration Rover Spirit

Spirit was a robotic Mars Exploration Rover operated by NASA. It successfully landed in Gusev Crater on Mars in January...

Geology Nasa Mars Rover

8.7 Great

17

Surveyor 1

Surveyor 1 was a NASA spacecraft that became the first American probe to achieve a soft landing on the Moon, touching do...

Nasa Past Moon Lander

8.7 Great

18

Rossi X-ray Timing Explorer

The Rossi X-ray Timing Explorer (RXTE) was an artificial satellite launched by NASA on December 30, 1995, to observe ast...

Astronomy Nasa Past Timing

8.3 Great

19

Yohkoh

Yohkoh, originally designated as the Solar-A mission, was a Japanese solar observation satellite launched in 1991. The s...

Solar Observatory Past X Ray

8.0 Great

20

TRACE

TRACE (Transition Region and Coronal Explorer) was a NASA heliophysics satellite launched in 1998 to study the Sun's mag...

Solar Nasa Observatory Past

8.0 Great