| 100% | EXPLORER | 8 | — 1, US satellite launched in 1958 |
| 63% | EXPLORER | 8 | First American satellite, launched in 1958 |
| 62% | AURA | 4 | US satellite launched in 2004 to study Earth's ozone layer, air quality and climate |
| 57% | TELSTAR | 7 | Low-altitude communications satellite launched by the US in 1962 |
| 53% | TELSTAR | 7 | Satellite launched in 1962 |
| 53% | MIR | 3 | Satellite launched in 1986 |
| 52% | VOYAGER | 7 | — 1, US unmanned spacecraft launched in 1977 |
| 51% | NASA | 4 | Launcher launched in 1958 |
| 50% | SPUTNIK | 7 | Soviet satellite launched in 1957 |
| 49% | ICYMOONS | 8 | Jupiter __ Explorer, satellite launched in 2023 |
| 49% | ABE | 3 | Bolivia's space agency that launched Bolivia's first satellite, Tupac Katari 1, in 2013 |
| 48% | ABE | 3 | National space org. that launched the Túpac Katari 1 satellite in 2013 from Xichang, China (abbr.) |
| 48% | PIONEER | 7 | USAF lunar probe mission launched in 1958 |
| 44% | NASA | 4 | US agency that launches satellites: Abbr. |
| 43% | SPUTNIK | 7 | First artificial satellite, launched in 1957 |
| 43% | NASA | 4 | US satellite-launching agency: Abbr. |
| 41% | NATIVEAMERI | 11 | About 1 in 60 U.S. residents |
| 41% | STATEMAP | 8 | Page in a U.S. 1-Across |
| 40% | GORDO | 5 | Monkey launched into space in 1958 |
| 40% | AQUA | 4 | NASA satellite launched in Earth orbit on May 4, 2002 to study and measure radiance, reflectance and backscatter |
| 40% | SKYLAB | 6 | US space station launched in May, 1973 |
| 39% | ISE | 3 | Nasdaq ___, launched in 2000 and the first all-electronic trader in US equity options (abbr.) |
| 38% | MARINER | 7 | Pair of Martian space probes launched by the US in 1969 |
| 38% | HHOUR | 5 | Time set to launch a mission, in U.S. military: Hyph. |
| 38% | EMMA | 4 | Watson who helped launch the U.N. campaign HeForShe in 2014 |
| 38% | OSLIN | 5 | K.T. with four No. 1 hits in the U.S. |
| 36% | VOLARE | 6 | 1958 #1 hit in a foreign language |
| 35% | NEWYORKER | 9 | The —, weekly US magazine launched in 1925 by Harold Ross |
| 35% | ECON | 4 | US News ranked 26-Down #1 in it |
| 35% | WHEATPENNY | 10 | U.S. coin last minted in 1958 |