Highlights
Journey to Alpha Centauri
Ken Croswell, Ph.D
Science & Nature
Alpha Centauri, star, outer space, sun, planets
HL
750
B2
English
9781683291862
For centuries, people have been studying Alpha Centauri, a group of three stars that are a little more than 4 light-years from Earth. That's relatively close in space terms. Scientists are trying to find out if the stars have orbiting planets that could sustain life.
Word lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Coverage |
|---|---|---|
| Eiken Grade 1 | 3,105 | 0.03% |
| Eiken Grade 2 | 866 | 0.58% |
| Eiken Grade 3 | 900 | 6.44% |
| Eiken Grade 4 | 600 | 12.5% |
| Eiken Grade 5 | 600 | 13.17% |
| Eiken Grade Pre1 | 2,868 | 0.24% |
| Eiken Grade Pre2 | 1,327 | 1.58% |
| Eiken Grade Pre2+ | 1,562 | 1.6% |
| NDL | 875 | 16.8% |
| NGSL 1 to 1,000 | 1,000 | 14.2% |
| NGSL 1,001 to 2,000 | 1,000 | 2.9% |
| NGSL 2,001 to 3,000 | 801 | 1.25% |
| NGSL Supplemental | 52 | 13.46% |
Grammar lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Unique | Coverage | Unique |
|---|---|---|---|---|
| Eiken Grade Pre1 | 94 | 94 | 0% | 0% |
| Eiken Grade 2 | 123 | 122 | 0% | 0% |
| Eiken Grade Pre2 | 111 | 108 | 0% | 0% |
| Eiken Grade 3 | 48 | 47 | 0% | 0% |
| Eiken Grade 4 | 52 | 49 | 0% | 0% |
| Eiken Grade 5 | 176 | 139 | 0% | 0% |
| A1 | 352 | 316 | 0% | 0% |
| A2 | 949 | 893 | 0% | 0% |
| B1 | 1,126 | 1,106 | 0% | 0% |
| B2 | 775 | 760 | 0% | 0% |
| C1 | 402 | 395 | 0% | 0% |
| C2 | 312 | 308 | 0% | 0% |