| 100% | VOYAGER | 7 | — 1, US unmanned spacecraft launched in 1977 |
| 57% | VOYAGER | 7 | The twin spacecrafts launched in 1977 |
| 46% | EXPLORER | 8 | — 1, US satellite launched in 1958 |
| 45% | VIKING | 6 | — 1, unmanned spacecraft sent to Mars by NASA in 1975 |
| 41% | PIONEER | 7 | — 10, US spacecraft launched in 1972 that made the first fly-by of Jupiter |
| 38% | SKYLAB | 6 | US space station launched in May, 1973 |
| 36% | VOYAGERONE | 10 | NASA probe launched in 1977 which is now the farthest man made object from Earth |
| 35% | NATIVEAMERI | 11 | About 1 in 60 U.S. residents |
| 35% | STATEMAP | 8 | Page in a U.S. 1-Across |
| 33% | TELSTAR | 7 | Low-altitude communications satellite launched by the US in 1962 |
| 33% | USA | 3 | ___ Network, "Burn Notice" network that was launched in 1977 and was a popular binge-worthy option before Netflix: Abbr. |
| 33% | XXXXX | 5 | He beat Connors in the 1977 U.S. Open final |
| 33% | ISE | 3 | Nasdaq ___, launched in 2000 and the first all-electronic trader in US equity options (abbr.) |
| 33% | MARINER | 7 | Pair of Martian space probes launched by the US in 1969 |
| 32% | HHOUR | 5 | Time set to launch a mission, in U.S. military: Hyph. |
| 32% | OSLIN | 5 | K.T. with four No. 1 hits in the U.S. |
| 32% | STARLINER | 9 | Boeing spacecraft first launched in May 2022 |
| 32% | BIXBY | 5 | Bill —, actor who played Dr David Banner in 1977-82 US TV series The Incredible Hulk |
| 31% | PROBE | 5 | Unmanned spacecraft |
| 30% | ECON | 4 | US News ranked 26-Down #1 in it |
| 30% | AURA | 4 | US satellite launched in 2004 to study Earth's ozone layer, air quality and climate |
| 30% | CHERYLLADD | 10 | Actress who played Kris Munroe in US television series Charlie's Angels from 1977-81 |
| 30% | ABE | 3 | Bolivia's space agency that launched Bolivia's first satellite, Tupac Katari 1, in 2013 |
| 30% | MCCAFE | 6 | Fast food concept and brand launched in Melbourne, Australia in 1993 that finally hit the US in Chicago in 2001 |
| 29% | SOYUZ | 5 | — 1, Russian spacecraft that crash-landed on return to earth in 1967 |
| 29% | ABE | 3 | National space org. that launched the Túpac Katari 1 satellite in 2013 from Xichang, China (abbr.) |
| 29% | SEATO | 5 | Intl. org. dismantled in 1977 |
| 28% | HELLO | 5 | Adele's fourth #1 hit in the US |
| 28% | SEATO | 5 | Defense grp. that disbanded in 1977 |
| 28% | HEIDSIECK | 9 | 1907 shipwrecked wine, discovered in 1977 |